Jack the Ripper suspects

 
Jack the Ripper: A survey of the suspects evidences, by Sean Bambrough.

In this paper we survey the evidences for and against each of 74 JTR suspects of others &/or ours including most of the main
common suspects. We leave it to the readers to decide for
themselves, though we state our own conclusions for each suspect and at the end we add our own conclusion of which few suspects we favour out of all the suspects surveyed.

1. Montague John Druitt:

Pros:
The name Jack could be from his middle name John.
The murders stopped after his death.
His death by drowning matches police statement that JTR drowned in Dec 88.
He heads the list of suspects in Wikipedia.
His mother and grandfather suffered mental problems.
He might have been a homosexual which might match JTR being a misogynist and having no arousal or violation/penetration.
MJD was the son of a Dorsetsire surgeon, and MJD was described as being a Dr, while JTR may have had anatomical knowledge and displayed surgical speed.

Cons:
He has alibi and witnesses for being too far away from the area at the time of some of the murders.
JTR is believed to have been a local of Whitechapel & Spitalfields, but MJD lived many miles away on other side of Thames.
The decription of MJD being a Dr was wrong, he was only a barrister and a schoolmaster.
The only evidence for him as a candidate/suspect is the coincidental timing of his death.

Conclusion:
MJD pretty surely ruled out.


2. Seweryn Antonowicz Klosowski / George Chapman / Ludwig Schloski

Pros
Arrived in London between Jun 87 & 88, shortly before the start of the murders.
JTR murdered half a dozen female prostitutes and is supposed to have been a misogynist; Klosowski poisoned 3 wives.
JTR thought to have been local to Whitechapel; Klosowski lived in Whitechapel at the time of the murders.
Klosowski worked as a barber. Barbers & surgeons were in same guild. JTR could have been a surgeon or barber.
He was Abberline's favoured suspect.
His alias surname is same as JTR victim Annie Chapman.

Cons:
No link with name Jack(y).
JTR letter said "I'm not a Yid nor yet a foreign skipper", while Klosowski was Polish.
Klosowski poisoned his wives, while JTR knifed them, and serial killers and criminals don't usually display such a change of modus operandi.

Conclusion:
SAK can be ruled-out.


3. Aron/Aaron Mordke Kozminski/Kosminsky (Nathan Kaminsky?) :

Pros:
Test of DNA on shawl said to have belonged to victim Eddowes matched Kosminsky, and there was allegedly evidence of spattered blood & split body parts evidence &/or kidney cell in the shawl/scarf. The alleged 2 shawl dates connect with 1/2 others of the murders.
Dye evidence that the shawl made in eastern Europe in 19th century, while Kosminsky was a Polish Jew.
Goulston graffito implied Juwes (Masons or Jews), and Kosminsky is a Jew. Shawls are also Jewish, and Jew could afford an expensive one.
Kosminsky was a misogynist, and suffered from mental ill-health.
Edwards said Kosminsky was "a pathetic creature"/"lunatic".
He was in a lunatic asylum in 1891. The last non-canonical murder was in 1891.
Kosminsky was a suspect, and he was named in that policeman's note.
"The police had believed they knew the identity [of JTR]", and "Anderson wrote that a Polish Jew had been identified as the Ripper", and Kosminsky is a Polish Jew. MJK seen talking with Jewish man before she died.
JTR is thought to have been a local of Whitechapel; Kosminsky was living in the area (Greenfield Street, Whitechapel, only 200 yards from 3rd victim Stride's death site).
Kosminsky's name is similar to that of Nathan Kaminsky who was a bootmaker living in Whitechapel who had been treated at one time for syphilis and who could not be traced after mid-1888, which details might connect with JTR?
Kosminsky was a hairdresser, which could link with JTR's cutting necks/ears/faces, sharp knife, adeptness with knife, blood passing unnoticed, apron, [cuting from behind?]
The JTR letters might have been a hoax by a journalist or other person, and so there is no need for a match with the name Jack.
Kosminsky's picture looks like he could be JTR (more than the other 5 "main suspects" pictures).

Cons:
No link with name Jack(y).
JTR letter said "I'm not a Yid nor yet a foreign skipper", while Kosminsky was Polish and Jewish.
Shawl dna & test is disputed as being doubtful/unreliable. Kosminsky could have just been a client?
How did they know that the dna was Kosminsky's in that they had to find a relative of Kosminsky?
The dna was "Russian Jewish" not Polish (Jew)?
The shawl was supposed to be "soaked in blood", and "unwashed", yet there were only some spots/stains?
The shawl/scarf evidence seems to much like the shroud of Turin?
"Macnaghten stated that no one was ever identified as the Ripper, which directly contradicts Anderson's recollection."
Kosminsky was largely harmless in the asylum.
Kosminsky was under surveilance/monitoring.
"FBI profiler John Douglas states that a paranoid individual such as Kosminski would likely have openly boasted of the murders while incarcerated had he been the killer, but there is no record that he ever did so".
Kosminksy may have been confused with Kaminsky.
It seems doubtful that he (JTR / Kosminsky) would "leave it (the scarf/shawl) as an obscure clue of where he was going to strike next".
It seems strange that the DNA result just happened to agree with the Ripperologist's favoured suspect?
It seems abit doubtful why the policeman took the shawl and give the shawl to his wife?
They say that Eddowes was too poor to own the expensive shawl.
Was Kosminsky strong enough?
Kosminsky wouldn’t have anatomical knowledge (& surgical speed)? (Though barbers/hairdressers shared same guild as surgeons.)
Why did the MJK papers go missing unitl 1987 (a century after 1888)?
"From Hell" would make more sense from someone else like MJK than from Kosminsky?
The 5 canonical JTR murders start in Aug 88 and end in Nov 88 (and the police closed the case after MJK, the Vigilance group was disbanded, and extra police removed), but Kosminsky wasn't put in asylum until 1891, and the 5 canonical murders are different to the others before and after (to 1891).
The way one of the 3 Pro-Kosminsky articles writers wrote insulting amateurs/etc makes me suspicious ("obsessive", "delights to debunk", "junk", "empty and ... worthless" "faux-scientific", "anguished denial", "peevishly dismissed", "flimsy", "desperate claim", "fevered", coupled with the also maybe-susupicious "JFK shot by lone misfit" comment). Edwards saying Kosminsky was "a pathetic creature" / "lunatic" rings suspicious to me.
Police didn't have enough evidence to convict/connect Kosminsky.
"No peer review".
The scarf DNA is only for one murder, what about the other 4/5/10 murders?
"The mutilation of a human creates a tremendous mess and the killer would be covered in blood. Aaron lived with his brother and sister who would clearly would be aware that their brother was guilty of murder when returning home."
What was his motive/motivation (as Edwards says/implies himself even)?

Conclusion:
The shawl evidence and evidences for JTR bring Jewish seem pretty compelling/convincing at first sight, but all the cons make it seem much less so, and overall AMK seems unlikely.


4. Michael Ostrog:

Pros
He used numerous aliases.
He claimed to be a surgeon.
He committed some offenses for which he was jailed.
Ostrog sent to asylum Sep 87, and Ostrog released from asylum 10 Mar 88 (shortly before the JTR murders Aug-Nov 88).

Cons:
JTR letter said "I'm not a Yid nor yet a foreign skipper", while Ostrog was Russian and in France.
Researchers have failed to find any evdience that he committed crimes any more serious than fraud/conman & theft.
He was in prison in France during the JTR murders.

Conclusion:
MO is certainly ruled out.


5. John Pizer "the Leather Apron":

Pros:
Jack is often a short nickname for John.
The Leather Apron was extorting money from prostitutes Sep 87-Sep 88.
Pizer was a bootmaker and so might have had sharp instruments to cut leather?
He was in Whitechapel.
Many locals believed that the Leather Apron was the Ripper.
"He had a prior conviction for a stabbing offence, and Police Sergeant William Thicke apparently believed that he had committed a string of minor assaults on prostitutes."
Thicke arrested Pizer on 10 September after the Nichols & Chapman murders.
The Goulston "Juwes" graffito implied Jews or Masons, and Pizer was a Jew.

Cons:
JTR letter said "I'm not a Yid nor yet a foreign skipper", while Pizer was a Polish Jew.
"That joke about Leather Apron gave me real fits".
The inspector investigating the JTR murders reported that there is no evidence whatsoever against Pizer, and Pizer he alibis for two of the murders was cleared of suspicion. (He was staying with relaives at the time of one murder, and was talking with a police officer at the time of another murder.)
"Pizer implied that his arrest was based on animosity rather than evidence."
"Pizer successfully obtained monetary compensation from at least one newspaper that had named him as the murderer."
An extorter is a different modus operandi to a serial killer.

Conclusion:
Pizer is certainly ruled out due to the alibis etc.


6. James Thomas Sadler:

Pros:
Jack is often a short nickname for James.
He was a friend of the last victim Francis Coles, and he was arrested and briefly considered as a JTR suspect.
"Sadler was named in Macnaghten's 1894 memorandum in connection with Coles's murder."
"Macnaghten thought Sadler was a man of ungovernable temper and entirely addicted to drink, and the company of the lowest prostitutes."

Cons:
There was little evidence against Sadler for Coles' murder and he was only briefly suspected and was released without charge.
Sadler was at sea at the time of the 1st four canonical murders.

Conclusion:
Sadler is certainly ruled out for the canonical JTR murders, and probably for Coles' murder too.


7. Francis Tumblety / Frank Townshend:

Pros:
He was commonly perceived as a misogynist.
He was a "quack" herb doctor which might imply some Dr type knowledge.
He had previous criminal charges. He was connected to the death of one of his patients.
In 1865, he was arrested for alleged complicity in the assassination of Abraham Lincoln.
He was in England in 1888.
He was arrested for homosexual acts in Nov 88, which might match JTR's misogyny and lack of arousal.
"It was reported by some of his friends that he showed off a collection of matrices (wombs) from every class of woman at around about the time (of Nov 88)".
Tumblety was mentioned as a Ripper suspect by Chief Inspector John Littlechild.
Tumblety goes to France & then America 24 Nov 88, shortly after the last canonical murder on 9 Nov 88.

Cons:
No link with name Jack.
JTR letter said I'm not a Yid nor yet a foreign skipper", but Tumblety was an Indian herb doctor in the USA and Canada.
No connection of Tumblety with the assassination was found and he was released without being charged.
He was arrestd in Nov 88 and afterwards fled to France, but I don't know whether the arrest was after or during or before the last canonical JTR murder was 9 Nov 88?
"American reports that Scotland Yard tried to extradite him were not confirmed by the British press or the London police, and the New York City Police said, "there is no proof of his complicity in the Whitechapel murders...."

Conclusion:
The evidence for him is pretty pitiful except for the matrices collection, while the cons are fairly good.


8. William Henry Bury:

Pros:
Bury strangled his wife who was a former prostitute on 4 Feb 1889 not long after tte last canonical JTR murder in Dec 88. He inflicted wounds to her abdomen after she was dead and packed to body into a trunk, which is similar to some JTR mutilations and bodies.
He had been in the East End of London until Jan 89 or shortly before Feb 1889 (after the last JTR murder in Nov 88).
His name Bury makes one think of burial.

Cons:
No link with name Jack.
Bury denied any connection with JTR, while he confessed to his wife's murder.
Bury's strangling is a different modus operandi to JTR.
Can't remember whether pro or con:
Bury moves to Bow Oct 87 until Jan 89, which either was or was not anywhere near Whitechapel.

Conclusion:
Doesn't seem much of a case for Bury except for the similar mutilation.


9. Dr Thomas Neill Cream:

Pros:
He was a doctor secretly specialising in abortions.
In 1881 he was found guilty of the fatal poisoning of his mistress's husband.  
He moved to London after his release from prison in 1891, where he resumed killing and was soon arrested.
He was arrested in 1891 or 1892, hanged on 15 November 1892, while the last non-canonical Whitechapel murder was in 1891. "According to some sources Cream's last words were reported as being 'I am Jack the...', interpreted to mean Jack the Ripper."
Although Cream was in prison during the time the murders occured, "Donald Bell suggested that he (Cream) could have bribed officials and left the prison before his official release, and Sir Edward Marshall-Hall suspected that his (Cream's) prison term may have been served by a look-alike in his place."

Cons:
No link with the name Jack.
JTR letter said "I'm not ... a foreign skipper", but Cream "was born in Glasgow, educated in London and Canada, and entered practice in Canada and later in Chicago, Illinois".
Police officials who attended the execution made no mention of Cream's alleged interrupted confession.
Cream was in prison in Illinois from November 1881 to 31 July 1891, while the canonical JTR murders were from Aug to Nov 88.
Bell's notions "are unlikely, and contradict evidence given by the Illinois authorities, newspapers of the time, Cream's solicitors, Cream's family and Cream himself."
Cream was released from prison on good behaviour.
He seems to have had a different modus operandi.

Conclusion:
Cream's abortions and killings are a little bit similar to JTR but they are not majorly similar, and there are no compelling/convicting evidences except for the alleged confession which is doubted, and he can't have been JTR since he was in prison the whole time.


10. Thomas Hayne Cutbush:

Pros:
Cutbush "was a medical student sent to Lambeth Infirmary in 1891 suffering delusions thought to have been caused by syphilis. After stabbing a woman in the backside and attempting to stab a second he was pronounced insane and committed to Broadmoor Hospital in 1891, where he remained until his death in 1903." Compare JTR is suggested to have had anatomical knowledge and surgical speed, and to have been psychotic/mad/insane/crazy, and he knifed attacked prostitutes (who spread syphilis), and the last non-canonical Whitechapel murder was in 1891.
The Sun newspaper suggested that Cutbush was the Ripper.
AP Wolf's book suggested that Macnaghten wrote his memo to protect Cutbush's uncle, a fellow police officer.
Peter Hodgson considers Cutbush the most likely candidate.
David Bullock firmly believes Cutbush to be the real Ripper in his book.
The name Cutbush makes one think of JTR's cutting with a knife.

Cons:
No link with the name Jack.
Stabbing is abit different to JTR's slashing/cutting/slicing.
There is no evidence that police took the Sun's idea seriously.
Melville Macnaghten's memorandum naming the three police suspects Druitt, Kosminski and Ostrog was written to refute the idea that Cutbush was the Ripper.

Conclusion:
Despite some suggestive similarities there is not any much hard evidence for linking Cream with the actual JTR murders, so he is fairly safely ruled out.


11. Frederick Bailey Deeming:

Pros:
He murdered his first wife and four children in Rainhill near St Helens, Lancashire, in 1891, and his crimes went undiscovered until between later in 1891 to May 1892.
He emigrated to Australia later in 1891 and died in 1892, not long after the last non-canonical murder in 1891.
He had a second wife, who he also murdered, and her body was found buried under their house.
He wrote in a book, and later boasted in jail that he was Jack the Ripper.
Napper believed Deeming was not in jail at the time of the JTR murders, and there is some evidence that he was back in England then.

Cons:
No link with the name Jack/Jacky.
"The police denied any connection between Deeming and the Ripper."
"He was either imprisoned or in South Africa at the time of the Ripper murders. According to Robert Napper, a former Scotland Yard detective, the British police did not consider him a suspect because of his two possible alibis."

Conclusion:
Although the wife murders and dates are vaguely similar there doesn't seem much hard evidence connecting FBD with the JTR murders. He is unlikely to be JTR due to his alibi unless the evidences that he was not in prison and/or was in England have any basis.


12. Carl Ferdinand Feigenbaum / Anton Zahn:

Pros:
He was arrested in 1894 in New York City for cutting the throat of Mrs Juliana Hoffmann.
"Carl's lawyer William Sanford Lawton claimed that he (Feigenbaum) had admitted to having a hatred of women and a desire to kill and mutilate them, and Lawton further stated that he believed Feigenbaum was Jack the Ripper." It was covered by the press at the time.
"Trevor Marriott, a former British murder squad detective, argued that Feigenbaum was responsible for the Ripper murders as well as other murders in the United States and Germany between 1891 and 1894." (The last non-canonical Whitechapel murder was in 1891.)
Forensic anthropologist and criminologist Xanthe Mallet concluded that Feigenbaum could have been responsible for one, some or perhaps all of the Whitechapel murders.

Cons:
No link with the name Jack/Jacky.
JTR letter said "I'm not ... a foreign skipper", but Carl was a German merchant seaman, and he was allegedly in the US & Germany from 1891 to 1894.
Lawton's idea was not pursued until more than a century after his accusation.
"According to Wolf Vanderlinden, some of the murders listed by Marriott did not actually occur; the newspapers often embellished or created Ripper-like stories to boost sales. Lawton's accusations were disputed by a partner in his legal firm, Hugh O. Pentecost."
There is no proof that Feigenbaum was in Whitechapel at the time of the murders.
Some people doubt that all the Jack the Ripper murders were committed by the same person.

Conclusion:
Except for the similar throat cutting, the evidence for CFF is somewhat dubious/unreliable, and it all hinges on Lawton's claims. So he can be dismissed as a serious candidate unless further more reliable evidences.


13. Robert Donston Stephenson / Roslyn D'Onston:

Pros:
He was interested in the occult and black magic, and he wrote a newspaper article in which he claimed that black magic was the motive for the killings. His strange manner and interest in the crimes resulted in an amateur detective reporting him to Scotland Yard on Christmas Eve, 1888. Two days later Stephenson reported his own suspect. Subsequently, he fell under the suspicion of newspaper editor William Thomas Stead. In his books on the case, author and historian Melvin Harris argued that Stephenson was a leading suspect.
He admitted himself as a patient at the London Hospital.  
He was in Whitechapel (in hospital there) during the months that the murders occured.

Cons:
No link with the name Jack.
The police do not appear to have treated either him as a serious suspect.
He was a patient at the London Hospital from shortly before the murders started, to shortly after they ceased, and the hospital night-shift rosters and practices indicate that Stephenson was not able to leave on the nights of the murders.
It doesn't sound like he was a mental patient at the hospital.

Conclusions:
There are no reasons for seriously considering Stephenson as a suspect, and can't be JTR unless he was able to leave the hospital on the days.


14. Prince Albert Victor Duke of Clarence & Avondale:

Pros:
Jullian mentioned rumours that the Prince might have been responsible for the murders.
The prince was allegedly driven mad by syphilis, which could be a motiver for hating prostitutes.
Efforts to investigate Stowell's claims were hampered, and is son burnt his papers.
The Goulston St "Juwes" graffito implicates Masons or Jews, and the prince/duke allegedly had Freemason friends.
It is claimed that the prince/duke secretly married a Catholic shop assistant and had a daughter by her, and that the murders were to remove anyone aware of the child.
"Spiering claimed to have discovered a copy of some private notes written by another suspect, Sir William Gull, in the library of the New York Academy of Medicine and that the notes included a confession by Albert Victor under a state of hypnosis."
"Spiering further suggested that Albert Victor died due to an overdose of morphine, administered to him on the order of Prime Minister Lord Salisbury and possibly Albert Victor's own father, Edward VII of the UK."
JK Stephen was supposedly the Prince's lover which implies the prince was homo or bi sexual and this could match JTR who is supposed to be a misogynist.
A suspicious bloodstained man was seen in the Prince Albert on 8 Sep 88.

Cons:
No link with name Jack.
"Many facts contradict this theory".
He had strong alibis, he was away from London at the time of some of the murders.
Jullian didn't give the dates or sources of the rumours. The rumour possibly derived indirectly from Dr Thomas Stowell in 1960, and Stowell's information was seemingly just a suspicion.
"The suggestion was widely dismissed" after the theory was brought to public attention in 1970. It is said that it is unlikely the prince suffered from syphilis.
"Stowell later denied implying that Clarence was the Ripper", and his son said there was nothing of importance in his papers. Subsequent theorists also don't implicate the prince directly.
Joseph Gorman/Sickert who originated the later elaborated theory later retracted the story and admitted it was a hoax.
Spiering's book "is widely dismissed as a sensational fiction based on previous theories rather than genuine historical research." "The New York Academy of Medicine denies possessing the records Spiering mentioned, and when Spiering was offered access to the Royal Archives, he retorted: "I don't want to see any files."

Conclusion:
He is definitely ruled out as a primary suspect.


15. Joseph Barnett.

Pros:
Barnett was victim Mary Jane Kelly's lover.
Barnett and MJK quarelled and separated in Oct 88 after MJK returned to prostitution to make a living, and it is suggested that his motive for the murders could be due to being a scorned or jealous lover, or that he committed the other murders to scare Kelly off the streets and out of prostitution.
Inspector Abberline questioned Barnett for 4 hours after Kelly's murder, and his clothes were examined for bloodstains.

Cons:
No personal link with name Jack.
Barnett was released without charge after being questioned and examined by Abberline, and he appears to have been exonerated.
"Other authors suggest he killed Kelly only, and mutilated the body to make it look like a Ripper murder".

Conclusion:
JB doesn't seem to have any much evidence going for him being the perpetrator of the canonical JTR murders of 1888.


16. Lewis Carroll / Charles Lutwidge Dodgson:

Pros:
"He was named as a suspect based upon anagrams which author Richard Wallace devised for his book Jack the Ripper, Light-Hearted Friend."
"Wallace argues that Carroll had a psychotic breakdown after being assaulted by a man when he was 12."
"According to Wallace, Carroll wrote a diary every day in purple ink, but on the days of the Whitechapel killings, he switched to black."

Cons:
"This claim is not taken seriously by scholars".
No link with name Jack.
He would be more likely to hate men than women due to the assaut being by a man.

Conclusion:
LC can be ruled out as there are no evidences except for the 3 pros, and the 3 pros are pretty weak except for possibly the dairy one.


17. David Cohen (Nathan Kaminsky? Leather Apron John Pizer?)

Pros:
He was in a lunatic asylum, and he displayed violent, destructive tendencies at the asylum and had to be restrained.
His incarceration roughly coincides with the end of the canonical murders.
Cohen was an East End local.
Described as violently anti-social.
As a tailor he might ....
Cohen is a Jew, an the JTR Goulston St Juwes graffitio implicated Mason(s) or Jew(s).
Fido claimed that the name "David Cohen" was used at the time to refer to a Jewish immigrant who either could not be positively identified or whose name was too difficult for police to spell, so Cohen's identity and whereabouts and name might not have been known.
Fido identified Cohen with the Leather Apron John Pizer who is closely similar to JTR.
Fido speculated that Cohen is the same as Nathan Kaminsky who could not be traced after mid-1888 (the same time as Cohen appeared), and Kaminsky has some matches with JTR.
FBI criminal profiler John Douglas asserted that behavioural clues gathered from the murders all point to Cohen or someone very much like him.
Cohen put in infirmary then asylum 7 Dec 88 to Oct 89, shortly after the last canonical murder in Nov 88.

Cons:
No connection with name Jack/Jacky (unless he had a different too-difficult-to-pronounce real name similar to Jack, or unless he was John Pizer).
JTR letter said "I'm not a Yid nor yet a foreign skipper", while Cohen was Polish and Jewish.
Fido's speculations are hardly very certain.
The name John Pizer or Nathan Kaminsky is hardly "too difficult to pronounce".
Kaminsky may have been confused with Kosminsky.

Conclusion:
The evidences for DC seem too unreliable.


18. Sir William Withey Gull 1st Baronet.

Pros:
He was a physician, and JTR is thought to have had anatomical knowledge and surgical speed.
The name Jack could be from his alleged accomplice John Netley.

Cons:
No match for name Jack except for his alleged accomplice John Netley.
"Conventional historians have never taken Gull seriously as a suspect due to sheer lack of evidence".
"He was in his seventies at the time of the murders and had recently suffered a stroke." He retired in 1887.
Gull dies Jan 1890 a year after the last canonical murder (Nov 88) and a year before the last non-canonical murder (1891).

Conclusion:
The evidence is very small and weak for him being JTR.


19. George Hutchinson:

Pros:
"On 12 November 1888, he made a formal statement to the London police that in the early hours of 9 November 1888, Mary Jane Kelly (the 5th canonical JTR victim) approached him in the street and asked him for money. He stated that he had then followed her and another man of conspicuous appearance to her room, and had watched the room for about three-quarters of an hour without seeing either leave. He gave a very detailed description of the man, claiming he was of Jewish appearance, despite the darkness of that night. The accuracy of Hutchinson's statement was disputed among the senior police. .... ... Robert Anderson, head of the CID, later claimed that the only witness who got a good look at the killer was Jewish. Hutchinson was not a Jew, and thus not that witness. Hutchinson's statement was made on the day that Mary Kelly's inquest was held, and he was not called to testify. Some modern scholars have suggested that Hutchinson was the Ripper himself, trying to confuse the police with a false description...."

Cons:
No link with the name Jack.
"Inspector Frederick Abberline, after interviewing Hutchinson, believed that Hutchinson's account was truthful. ....
Others suggest he (Hutchinson) may have just been an attention seeker who made up a story he hoped to sell to the press."
Why did GH follow MJK and why did he watch for 3/4ers of an hour?

Conclusions:
Although GH's statement seems abit suspicious, there are no submitted evidences for GH being acutally connected with the murders except for that he met/saw/knew MJK. So he can probably ruled out as being JTR.


20. James Kelly:

Pros:
His name James Kelly could be whence the name Jack/Jacky (via Ja. K. or Ja. K...y). Jack is also a diminutive short nickname for James.
He was in a lunatic asylum.
He murdered his wife by stabbing.
He escaped in early 1888, while the canonical JTR murders are all in 1888.
His whereabouts during the time of the murders is unknown.
He was smart/clever to break out of asylum with a self-made key.
The last canonical victim's name (Mary) Jane Kelly is similar to James Kelly's.
His turning himself back in to the asylum officials might have been an act of remorse/regret/repentance for the JTR murders.
Kelly's asylum file has never been opened since 1927. Norris who was given permission to view it said it has a perfect profile match for JTR.

Cons:
There are no close connections with the crimes.
The theory/claim that James Kelly also committed murders in the USA is dubious and it conflicts with the US investigators saying JTR was still in London.

Conclusion:
James Kelly does have good evidences reasons for being one of the most likely candidates for being JTR, though he doesn't have any definite close connections with the crimes.


21. Charles Allen Lechmere / Charles Cross:

Pros:
He was a meat cart driver for the Pickfords company.
"He is conventionally regarded as an innocent witness who discovered the body of the first canonical Ripper victim, Mary Ann Nichols. According to Holmgren, Lechmere lied to police, claiming that he had been with Nichols's body for a few minutes, whereas research on his route to work from his home demonstrated that he must have been with her for about nine minutes. When Lechmere called over Robert Paul to look at her, no blood was visible, but by the time a constable found her shortly afterward, a pool had formed around her neck, suggesting the cut to her throat was extremely fresh when Lechmere and Paul were present. He also refused Paul's suggestion to prop her up, which would have instantly made it clear that her throat had been cut. In addition, neither man reported seeing or hearing anyone else in Buck's Row, which had no side exits. Her injuries were also hidden under her clothing, whereas the Ripper typically left the wounds displayed. It was theorized that Lechmere had killed Nichols and begun the process of mutilating her body when he heard Paul's footsteps, and then rushed to portray himself as the discoverer of her body. Lechmere did not come forward until Paul mentioned him to the press, and he gave evidence under the name 'Charles Cross' at the inquest."
"Lechmere's home address, visits to family, and route to work link him to the times and places of murders; he passed three streets where Martha Tabram, Polly Nichols, and Annie Chapman were murdered roughly at the same time the murders are estimated to have occurred. The 'Double Event' murders of Elizabeth Stride and Catherine Eddowes occurred on a Saturday, his only night off from work: Stride was killed near Lechmere's mother's house in an area he grew up in, and the direct route from Stride's murder scene to the location of Eddowes's murder followed a path to Lechmere's route to work that he had used for twenty years. Mary Kelly was also murdered on his route to work, and the time frame in which she is estimated to have been killed matches his route, although the day she was killed was a holiday and he may have had the day off."
"Lechmere's family background is also similar to that of many serial killers: he grew up in a broken home; having never known his biological father, he had two stepfathers; and his childhood was characterized by an instability of residence, growing up in a series of different homes."
"In addition, his occupation as a meat cart driver would have allowed his blood-splattered appearance to escape suspicion." "Holmgren believes that Lechmere may have been responsible for several other murders in addition to those of the canonical five victims and Martha Tabram."

Cons:
No link with the name Jack.
"Her (1st victim's) injuries were also hidden under her clothing, whereas the Ripper typically left the wounds displayed", which may mean that even if had could of killed her he may not be the killer of the later 4 canonical JTR victims.
The time difference of a few minutes or 9 minutes doen't seem major to me. Also, I thought bodies don't bleed (much) after death? Him not wanting to prop her up could have other equally or more likely reasons/explanation.
"The 'Double Event' murders of Elizabeth Stride and Catherine Eddowes occurred on a Saturday, his only night off from work", and "although the day she (MJK) was killed was a holiday and he may have had the day off", and so Lechmere would not have been travelling the route to his work, and even if he had it is not likely for someone to murder someone on the way to/from work, and a killer would not necessarily be likely to kill on a route he/she used so regularly.
Lecmere's famly background is hardly strong proof for him being a serial killer. My own parents split up around the time I was born and my mother remarried and my step father abused me until I was fostered out around age 7 and I went through half a dozen foster placements and shifts and schools and never met my real father until my mid-teens, and yet I am not a serial killer despite some consequential pyschological/social problems.
Why wasn't he "blood splattered" in the case of the 1st victim?

Conclusion:
Times & places coincidences and the details of the 1st victim's case in which he was a witness seem somewhat compelling, but other than that there is not much strong evidence for him committing the murders except possibly the 1st one.


22. Jacob Levy:

Pros:
Jack could be from Jacob.
He was a butcher, so he had the tools and the skills for cutting out body parts.
He was living in Middlesex Street, right in the heart of the area where the murders happened.
He contracted syphilis from a prostitute, so he had a possible reason for hating prostitutes.
Levy dies 1891, the last non-canonical murder was in 1891.

Cons:
JTR letter said "I'm not a Yid nor yet a foreign skipper", but Levy was presumably Jewish judging by his two names.
JTR letter said "I'm not a butcher".
A butcher maybe does't exactly have the same sort of surgical and anatomical skills that JTR is thought by some to have had?
Contracting syphilis seems maybe not much enough of a motive.

Conclusion:
From the above and other evidences I can't remember or find right now I tend to doubt Levy as a very strong suspect, though he possibly might match.


23. James Maybrick:

Pros:
The name Jack could be from the first two and last two letters of JM's name (Ja. ...ck). Jack is also a common short nickname for James.
He died 11 May 1889, not long after the last canonical JTR murder in Nov 88.
"His wife Florence was convicted of poisoning him with arsenic in a sensational... trial presided over by Sir James Fitzjames Stephen, the father of another modern suspect JK Stephen."
"Shirley Harrison asserted James Maybrick was both Jack the Ripper and the Servant Girl Annihilator of Austin, Texas."
"A diary purportedly by Maybrick, published in the 1990s by Michael Barrett, contains a confession to the Ripper murders.
Anne Barrett, after their divorce, later denied forgery."

Cons:
If Maybrick was in Liverpool then he was not local to Whitechapel like JTR is thought to have been.
Maybrick's wife's trial was "possibly unjust".
"In 1995, Barrett confessed to writing the diary himself, and described the process of counterfeiting the diary in detail. He swore under oath that he and his wife, Anne, had forged it.
... and their story changed several times over the years. The diary was discredited by historians who pointed to factual errors in relation to some of the crimes, and document experts pronounced the diary a fake; the handwriting does not match that of Maybrick's will, and the ink contains a preservative not marketed until 1974."
The linking of Maybrick with the Texas annihilator seems dubious, and it is not likely JTR was in USA because JTR letter says "I'm not ... a foreign skipper", and because American investigators said JTR was still in London.

Conclusion:
There are not really any evidences that Maybrick was closely connected with the JTR murders except for the possible link with the name Jack. The dairy seems pretty doubtful. So JM is probably ruled out.


24. Michael Maybrick / Stephen Adams:

Pros:
He was English.
"Bruce Robinson documents how this suspect frequented the Whitechapel area where the murders took place and investigates a description of a man seen by Matthew Packer on the night of the murder of Elizabeth Stride who resembled Michael Maybrick. The suspect's profession meant he frequently travelled around the UK and the dates and locations of his performances (he was a composer & singer) coincide with when and where the letters to the police were sent from. The suspect's presence in Bradford around Christmas 1888 also coincides with the murder of a seven-year-old boy, Johnnie Gill, a murder which the Ripper had foretold to police in a letter."

Cons:
No link with the name Jack.
Some think that the JTR lettrs are a hoax of a journalist or other person.

Conclusion:
Apart from the coincidental times and places similarities, and the witnesses description similarity, there doesn't seem any much evidence for Maybrick being closely connected with the murders, nor what motive he could of had. So he is fairly safely ruled out.


25. Alexander Pedachenko:

Pros:
"He was named in the 1923 memoirs of William Le Queux, Things I Know about Kings, Celebrities and Crooks. Le Queux claimed to have seen a manuscript in French written by Rasputin stating that Jack the Ripper was an insane Russian doctor named Alexander Pedachenko, an agent of the Okhrana (the Secret Police of Imperial Russia), whose aim in committing the murders was to discredit Scotland Yard."
Pedachenko was promoted as a suspect by Donald McCormick.
Alexander Pedachenko:

Cons:
No link with name Jack (though the -dach- in Pedachenko is similar?)
JTR letter said "I'm not a Yid nor yet a foreign skipper", but Alex P was Russian.
He may be entirely fictional. "There is no hard evidence that Pedachenko ever existed".
"many parts of the story as recounted by Le Queux fall apart when examined closely. For example, one of the sources named in the manuscript was a London-based Russian journalist called Nideroest, who was known for inventing sensational stories. Reviewers of Le Queux's book were aware of Nideroest's background, and unabashedly referred to him as an unscrupulous liar."
"McCormick ... may have developed the story by adding his own inventions."

Conclusion:
There doesn't seem much evidence for him.
The stories of Queux & McCormick seem very dubious/unreliable, and there is no real close connection of Pedachenko with the murders submitted. So he is ruled out as being JTR.


26. Walter Richard Sickert:

Pros:
"He had a fascination with the Ripper murders, going so far as to stay in a room that was rumoured to have once had Jack the Ripper himself as a lodger, and depicted similar scenes in many of his paintings".
Joseph Gorman/Sickert claimed to be Sickert's illegitimate son, which might mean Sickert had extra-marital relations similar to prostitution?
Cornwell believes Sickert was JTR based on DNA analysis of letters that had been sent to Scotland Yard.

Cons:
No match with name Jack/Jacky (though the letters J, a &/or ck occur in his alleged son's name).
JTR letter said "I'm not a Yid nor yet a foreign skipper", while Sickert was German-born and of half Danish descent.
Strong evidence suggests Sickert was in France at the time of most of the murders.
He is not considered a serious suspect by most Ripperologists.
Experts believe that the letters sent to Scotland Yard are fake, or "another genetic analysis of the letters claimed the murderer could have been a woman".

Conclusion:
WRS is pretty certainly ruled out.


27. Joseph Silver/Lis.

Pros:
The Goulston "Juwes" graffito implicates Masons or Jews, and Silver was a Polish Jew.
He is alleged to have been a racketeer and psychopath?
Van Onselen said that the number of circumstances involved should make Silver a suspect.

Cons:
No link with name Jack.
JTR letter said "I'm not a Yid nor yet a foreign skipper", but Silver as Polish and Jewish.
"Onselen provides no evidence that Silver was ever in London during the time of the murders, and that the accusation is based entirely upon speculation."

Conclusion:
There doesn't seem to be any much reliable evidence for Silver being JTR.


28. James Kenneth Stephen:

Pros:
Jack could be from the initials JK or Ja. K. Jack is also a common short nickname for James.
JKS was allegedly a lover of the Duke of Clarence, which might match JTR being a misogynist. The Duke allegedly preferred female company and did not reciprocate Stephen's feelings, which could have made Stephen jealous and misogynist.
JKS's writings are "misogynistic".
There are alleged similarities between JKS's writings and the From Hell JTR letter.
JK Stephen dies Feb 1892 after the last non-canonical murder in 1891.

Cons:
Harrison's analysis was rebutted by professional document examiners.
"There is no proof that Stephen was ever in love with Albert Victor."

Conclusion:
The evidences for JKS seem pretty dubious/unreliable except for the similarities of the writings. So he is probably ruled out though its not totally certain.


29. Francis Thompson:

Pros:
He was an ascetic.
He was an opium adict.
He had some medical training.
He was homeless and in the Docks area south of Whitechapel between 1885 & 1888.
Francis Thompson's "end crowns the work" 1889.

Cons:
No link with the name Jack.
No close connections with the crimes.
An opium adict doesn't sound much like being able to be a serial killer.

Conclusion:
There are no strong evidences reasons for assuming he is JTR except for the end crowns the work.


30. William/Willy Berry Clarkson:

Pros:
He was a royal wigmaker and costume-maker, and JTR might have used such disguises since he evaded detection/discovery/identification & capture.
He lived approximately two miles from each of the canonical five crime scenes.
"Clarkson is known to have stalked his ex-fiancée, and was reputedly a blackmailer and arsonist. He is suspected of committing the murders to cover-up his blackmail schemes."
"He admitted one of his custom-made wigs was found near the scene of one of the Ripper killings."
"Clarkson's biography quotes him as stating that the police obtained disguises from him for their search for the Ripper, and as such, he would have been aware of the trails they followed, allowing him to elude capture."
"Hair-cutting shears and barber surgeon tools (his father or grandfather allegedly being a barber surgeon) of the kind used by a wig-maker at the time closely match the shape and style of the weapons suspected to have been used in the murders."

Cons:
No link with the name Jack.
Willy was not suspected at the time. He was first named as a suspect in 2019, with many of the assertions based on Clarkson's 1937 biography written by Harry J Greenwall, which is quite a number of decades after.
As a stalker, and an alleged blackmailer and arsonist he seems to have a different modus operandi to JTR.

Conclusion:
Clarkson does have quite a few compelling similarities which are not too easy to dismiss, but there is nothing much actually connecting him with the murders. So he can probably be ruled out.
 

31. Dr/Sir John Williams 1st Baronet of the city of London:

Pros:
Jack is a common short nickname for John.
He was a Dr & obstetrician & surgeon, while JTR is thought to have had anatomical knowledge and surgical speed..
Tony Williams and Humphrey Price claim that "the victims knew the doctor personally, that they were killed and mutilated in an attempt to research the causes of infertility, and that a badly blunted surgical knife, which belonged to Williams, was the murder weapon".

Cons:
"Jennifer Pegg demonstrated in two articles that much of the research [of Williams & Price] was flawed; for example, the version of the notebook entry used to argue that Williams had met Ripper victim Mary Ann Nichols had been altered for print and did not match the original document, and the line as found in the original document was in handwriting that did not match the rest of the notebook."
JTR's knife seems more likely to be sharp rather than blunt.

Conclusion:
The pro evidence seems pretty dubious/unreliable except for maybe the knife, so we can probably rule him out.


32. A Frenchman:

Pros:
Stephenson alleged that the Ripper was a Frenchman.
Jack could be from Jacques.

Cons:
JTR letter said "I'm not ... a foreign skipper", but a Frenchman is a foreigner.

Conclusion:
Not any or enough definite evidences for any specific Frenchman being closely connected with the crimes/case.


33. Dr Morgan Davies:

Pros:
He was a Dr at the London Hospital, and JTR is suggested to have had anatomical knowledge and surgical speed.

Cons:
The police do not appear to have treated him as a serious suspect.

Conclusion:
There are no submitted evidences for him being closely connected with the crimes and for seriously suspecting him.


34. Police Sergeant William Thicke:

Pros:
Thicke was accused of being the Ripper by HT Haslewood of Tottenham in a letter to the Home Office dated 10 September 1889.
Thicke had known the Leather Apron for years.

Cons:
No connection with name Jack.
"The presumably malicious accusation was dismissed as without foundation."
Pizer implied that his arrest by Thicke was due to animousity, which would imply that Thicke was not a type like Pizer or JTR.

Conclusion:
No evidence for Thicke being JTR.


35. Richard Mansfield:

Pros:
Mansfield starred in a theatrical version of RLS's Dr Jeckyll & Mr Hyde, and JTR could have got the name Jack from Jeckyll.
Mansfield's convincing portrayl of Jeckyll/Hyde seemed similar to the horrific murders of JTR.

Cons:
There are no evidences for Mansfield being JTR, the only 2 pros above are pretty weak/feable.

Conclusion:
RM is surely ruled out.


36. Frank Miles:

Pros:
He was syphilitic so he had a motive for hating prostitutes.
JTR is thought to have maybe had anatomical knowledge and been adept with a knife. Miles was an artist, and artists have knowledge of anatomy and are adept with brush.

Cons:
No link with name Jack.

Conclusion:
Evidence is pretty small for FM being JTR.


37. John McCarthy:

Pros:
Jack is a common short nickname for John.
He was last victim MJK's landlord and acquaintance.

Cons:
No other evidence?
He is only a suspect for MJK's murder not the other murders.

Conclusion:
He can probably be ruled out.


38. Joseph Fleming:

Pros:
He was last victim MJK's former boyfriend and acquaintance.

Cons:
No other evidence?
No link with name Jack.
He is only a suspect for MJK's murder not the other murders.

Conclusion:
He can probably be ruled out.


39. Nathan Kaminsky (David Cohen? Aaron M Kosminsky?)

Pros:
He was a bootmaker who might have had sharp leather cutting tools (and/or also compare the Leather Apron?)
He was living in Whitechapel.
He had been diagonsed & treated at one time for syphilis (Mar 88), so he had a motive for hating prostitutes.
Kaminsky released from infirmary May 88.
He could not be traced after mid-1888 (the year of the canonical JTR murders which were between August & November).

Cons:
No link with name Jack.
He may have been confused with Kosminsky.

Conclusion:
NK does have a few matches with JTR but otherwise there doesn't seem much of a case.


40. John Netley:

Pros:
Jack is a common short nickname for John.

Conclusion:
Not much evidences for Netley from my limited at hand sources.


41. Levitski:

Pros:
"He was named in the 1923 memoirs of William Le Queux, Things I Know about Kings, Celebrities and Crooks. Le Queux claimed to have seen a manuscript in French written by Rasputin stating that Jack the Ripper was an insane Russian doctor named Alexander Pedachenko, an agent of the Okhrana (the Secret Police of Imperial Russia), whose aim in committing the murders was to discredit Scotland Yard.  He was supposedly assisted by two accomplices: Levitski and a tailoress called Winberg."

Cons:
No known definite link with name Jack (though we don't know what his/her first & second names were?)
JTR letter said "I'm not a Yid nor yet a foreign skipper", but judging by his/her name he/she was Russian/Polish/Slavic or Jewish.
"There is no hard evidence that Pedachenko ever existed"
"many parts of the story as recounted by Le Queux fall apart when examined closely. For example, one of the sources named in the manuscript was a London-based Russian journalist called Nideroest, who was known for inventing sensational stories. Reviewers of Le Queux's book were aware of Nideroest's background, and unabashedly referred to him as an unscrupulous liar."

Conclusion:
The stories of Queux & McCormick seem very dubious/unreliable, and there is no real close connection of Levitski with the murders submitted. So he is ruled out as being JTR.


42. Winberg:

Pros:
"He was named in the 1923 memoirs of William Le Queux, Things I Know about Kings, Celebrities and Crooks. Le Queux claimed to have seen a manuscript in French written by Rasputin stating that Jack the Ripper was an insane Russian doctor named Alexander Pedachenko, an agent of the Okhrana (the Secret Police of Imperial Russia), whose aim in committing the murders was to discredit Scotland Yard.  He was supposedly assisted by two accomplices: Levitski and a tailoress called Winberg."
She was a tailoress which seems/feels like it might link with JTR's knifing?

Cons:
No known definite link with name Jack (though we don't know what his/her first & second names were?)
JTR letter said "I'm not a Yid nor yet a foreign skipper", but judging by his/her name he/she was German or Jewish.
"There is no hard evidence that Pedachenko ever existed"
"many parts of the story as recounted by Le Queux fall apart when examined closely. For example, one of the sources named in the manuscript was a London-based Russian journalist called Nideroest, who was known for inventing sensational stories. Reviewers of Le Queux's book were aware of Nideroest's background, and unabashedly referred to him as an unscrupulous liar."

Conclusion:
The stories of Queux & McCormick seem very dubious/unreliable, and there is no real close connection of Winberg with the murders submitted. So he is ruled out as being JTR.


43. Lizzie Williams:

Pros:
John Morris claims that "she was unable to have children and, in an unhinged state, took revenge on those who could by killing them".

Cons:
No link with name Jack.

Conclusion:
The evidence for her is small and dubious/unreliable.


44. Jacob Isenschmid:

Pros:
Jack could be from Jacob.
He was a butcher, and some have thought JTR may have been one.
Issenschmid was confined to an asylum on 17 Sep 88.

Cons:
JTR letter said "I'm not ... a foreign skipper", but Isenschmid was Swiss.
JTR letter said "I'm not a butcher".
Isenschmid was exonerated after another murder was committed while he was in custody.
Isenschmid's confinement is in the middle of the canonical JTR murders from Aug to Nov 88, which seems to rule him out.

Conclusion:
He is ruled out.


45. Charles Ludwig,

Pros:
He was a hairdresser which could connect with JTR's sharp blade and ear nicking.
Charles Ludwig threatened Elizabeth Burns with a knife 18 Sep 88.

Cons:
No link with name Jack.
JTR letter said "I'm not ... a foreign skipper", but Ludwig was German.
Ludwig was exonerated after another murder was committed while he was in custody.

Conclusion:
He is ruled out.


46. Oswald Puckridge:

Pros:
He was an apothecary, and a mental patient (released from asylum Aug 88, while the murders were from Aug to Nov 88).

Cons:
No link with name Jack.
There was no evidence against Puckridge.

Conclusion:
He is ruled out.


47. John Sanders (not same as 65 Dr Jon William Sanders?) :

Pros:
Jack is a common short nickname for John.
Sanders was allegedly insane and a medical student.

Cons:
There was no evidence against Sanders.

Conclusion:
He is ruled out.


48. Nikaner Benelius:

Pros:
He was a tramp.

Cons:
JTR letter said "I'm not ... a foreign skipper", but Benelius was Swedish and a tramp.
No link with name Jack.
There was no evidence against Benelius.

Conclusion:
He is ruled out.


49. Thomas Barnardo:

Pros:
He was a social reformer, and JTR's murders drew attention to the poor conditions of prostitues in London.
He claimed he had met one of the victims (Elizabeth Stride) shortly before her murder.

Cons:
No link with name Jack.
There was no evidence against Barnardo.

Conclusion:
He is ruled out.


50. L Forbes Winslow:

Pros:
He had his own suspect in the case

Cons:
No link with name Jack.

Conclusion:
Not any much strong or reliable evidence. He is ruled out.


51. G Wentworth Bell Smith:

Pros:
He was a "religious maniac".
He was a suspect of the suspect Winslow.

Cons:
No link with name Jack.

Conclusion:
Not any much strong or reliable evidence. He is ruled out.


52. Robert Mann:

Pros:
He was a morgue assistant.

Cons:
No link with name Jack.

Conclusion:
Not any much strong or reliable evidence for him being closely conected with the crimes/case. He is ruled out.


53. Dr Stanley:

Pros:
He is a named suspect.
He was a Dr, and JTR worked with sergical speed and may of had anatomical knowledge.

Cons:
No link with name Jack.
JTR letter implied JTR was not a Dr.
He may be entirely fictional.

Conclusion:
Not any much strong or reliable evidence for him being closely connected with the crimes/case. He is ruled out.


54. Nicolai Vasiliev:

Pros:
He was/is a named suspect
He was a cult leader.

Cons:
No link with name Jack.
He may be entirely fictional.

Conclusion:
Not any much strong or reliable evidence for him being closely conected with the crimes/case. He is ruled out.


55. Fogelma:

Pros:
He was/is a named suspect.
Fogelma died in an asylum in USA 1902.

Cons:
No link with name Jack.
JTR letter said "I'm not ... a foreign skipper", but Fogelma was Norwegian and a sailor, and he was in USA in 1902.
He may be entirely fictional.

Conclusion:
More evidence against than for him being JTR.


56. Olga Tchkersoff:

Pros:
She was/is a named suspect.
She was a needlewoman.

Cons:
No link with name Jack.
JTR letter said "I'm not ... a foreign skipper", but Olga was Russian.
She may be entirely fictional.

Conclusion:
There doesn't seem much evidence for her unless there is more we don't know.


57. Constance Kent:

Pros:
She was a convicted murderer.

Cons:
No link with name Jack.
From other examples in world history JTR is more likely to have been a man than a woman.

Conclusion:
The evidence seems small for this suspect.


58. Mary Pearcey:

Pros:
She was a convicted murderer.

Cons:
No link with name Jack.
From other examples in world history JTR is more likely to have been a man than a woman.

Conclusion:
The evidence seems small for this suspect.


59. Helena Blavatsky:

Cons:
No link with name Jack.
From other examples in world history JTR is more likely to have been a man than a woman.

Conclusion:
This suspect seems a ridiculous candidate.


60. HH Holmes:

Pros:
He was a notorious serial killer.
Mudgett used handwriting samples of the alleged-JTR letters sent to the police in to link Holmes to JTR.
An American psychic/clairvoyant claimed JTR was an American, and Holmes was an American.

Cons:
No link with name Jack.
JTR letter said "I'm not ... a foreign skipper", but Holmes was an American.
The letters with name Jack/Jacky might not be genuine, they might be a hoax of a journalist or other person.
The DNA on the letters is inconclusive or unreliable according to some analysers, and/or it may be contaminated.

Conclusion:
Holmes looks pretty unlikely to be JTR.


61. John Pavitt Sawyer:

Pros:
Jack is a nickname for John.
Author Frank Pearse purported to have access to a written confession.
He was in Whitechapel London.
He was a barber by profession, which might link with JTR's sharp blade and ear nicking.
The Goulston "Juwes" graffito implicated Mason(s) or Jew(s), and Pearse claimed Sawyer committed the murders as part of a Freemason initiation.

Conclusion:
The 5 pros do maybe seem somewhat good as a case, but there is not really a strong enough quality and quantity case as it stands to be very sure.


62. Lizzie Halliday:

Pros:
She was "mentally ill".
She was an Irish immigrant, and some detect an Irish dialect in the JTR letters.
She was suspected of leaving a string of dead husbands in her wake, and she was arrested for the murder of two women and her last husband.
She spoke "constantly" of the Whitechapel murders.

Cons:
No link with name Jack.
JTR letter said "I'm not ... a foreign skipper", but Haliday was in upper New York State in the USA. American investigators said JTR was still in London.
She denied any relation to the Whitechapel murders, "and there was no evidence to contradict her claim".
JTR is more likely to have been a man than a woman.

Conclusion:
There doesn't seem to be much evidence for her matching JTR.


63. James/Jack Feares Russell of Horton Kirby (Baron de Clifford) :

Pros:
He has a match for the name Jack, and for initials JR.
He was in Kent not far from London/Whitechapel at the time of the murders.
He married in 1888 the same year as the murders.
He was a carpenter and so may have had sharp cutting tools.

Cons:
Kent may be a little bit too far from Whitechapel.
As a Baron etc he doesn't seem likely to have been a serial killer.
No other evidence known.

Conclusion:
He seems an unlikely candidate compared to some other suspects.


64. Dr Jon William Sanders (not related to 47 John Sanders?) :

Pros:
He was a Dr.
He died in Jan 89 only a month after the last canonical murder.
Jack can be a short diminutive nickname for Jon.

Conclusion:
Not any evidence for JWS being connected with the murders.

65. Mason(s) :

Pros:
Jack could be from Maitre Jacques of the Masons. (Masons are also Scottish which links them with Jacobites?)
The Goulston street Juwes graffitio implies Masons or Jews. (Juwes is from the 3 Juwes of the Masonic story of the murder of Hiram Abiff.)
Openshaw was a mason.
"Dr Thomas Mason / Sir William Gull"?

Cons:
There are only those two not very major pros and not any much other evidences.

66. Robert Louis Stevenson &/or his cousin Robert/Bob Alan Mowbray Stevenson:

Pros:
JTR & RLS have coinciding/close dates.
The name Jack could be from any of these names/persons connected/associated with RLS: Dr Jeckyll (character), Prof Flemiing Jenkin (known by RLS, died shortly before the murders), Jankin(s), Jackstraw (spillikins which GKC said RLS writes like), Buildy Jack, Tin Jack / Jack Buckland (a passenger on RLS's ship voyage), Long John Silver (character), Jacobites? Also, the population of Whitechapel "often used aliases".
GK Chesterton said RLS writes like spillikins (Jackstraw), did GKC suspect? GKC has Father Brown letting a person go in one story.
Dr Jeckyl & Mr Hyde is similar in name to Jack TR and kill/ripper and hide, and similar in nature to JTR, was public in 1886 and around the time of the JTR murders.
RLS was in Bournemouth Jul 1884 to Aug 1887.
RLS leaving and going to Samoa could possibly be a reason for JTR murders?
Joao Santos interestingly suggests that RLS's "Samoa scheme" could have been an alibi scheme.
RLS has a connection with the historical dates 1666 & 1866 which are similar to 1888, or 1678/1686 (Jack Ketch), and 1666 is linked with 666.
The murders stopped after RLS died.  
Whitechapel [& Lamplighter?] could possibly connect with that Stevenson's were in the lighthouse design line of work (I mean like white/light chapel/house words analogy?)
"Whitechapel (carrion)" is mentioned in RLS's work (though this could just be because RLS was in Bournemouth in 1884-1887)
The Goulston St "Juwes" graffito implicates Mason(s) or Jew(s). Masons are linked with Scotlan, and RLS was Scottish.
JTR letter said "I'm your own lighthearted friend", and RLS's cousin is described as "a lighthearted young man", and RLS is also described as having in 1887 "lightheartedly planned, for the following summer, a cruise to the southern Pacific ocean".
RLS's cousin may have had a homosexual affection for RLS?
Joao Santos points out that RLS's work 'the Ebb-tide' has lots of seeming similarities with JTR. Hell in RLS's Ebb-tide could relate to the From Hell JTR letter?
JTR is suggested to of had knowledge of human anatomy. RLS's cousin was an artist, and artists have knowldge of human anatomy. JTR writing in blood may also connect with artist?
It is often supposed that JTR must be big/strong enough to man-handle women. RLS works mention imbibing a drug which makes strong?
Joao Santos says RLS or RLS's cousin had relations with prostitute/prostitutes at [university?]
Janet Nicol/Nichol/Nicoll in RLS's life has similar name to JTR victim Polly Nichols.
RLS's "my shadow"?
Joao Santos gives some more sinister RLS quotes.
JTR letter said "I'm not ... a foreign skipper but I'm your own lighthearted friend". RLS & his cousin Scottish (British), and RLS was a famous writer.
A picture of RLS looks to me abit JTR-like in my imagination?
The other USA murders that some think may possibly have connection with JTR might be conected with that RLS or the Stevensons were in USA sometime/somtimes?
There could be a "conspiracy" if they knew that it was RLS or RLS's cousin, and they may have kept it quiet because RLS is great/famous?
Not sure if (the) Ripper could connect with Robert?
Not sure if J(T)R could also connect with the LJR club?

Cons:
RLS doesn't seem to have been in London in 1888. (RLS plan cruise 1887, and RLS to Colorado 1887, and RLS in Pacific 1888/1889/1890/1892/1894.)
Some of the dates don't match. Janet Nichol and Jack Buckland 1890 long after Polly Nichols murder.
Critics said the actual story of Jeckyl & Hyde is not so similar.
RLS/Stevensons were in a different part of USA than the similarish killings there.
The similarities in the Ebb-tide might just reflect a possible interest of RLS in JTR news?
When I read the 200 pages court cases records there was nothing remotely linkng to RLS.
I also doubt that a great writer like RLS could be JTR.

Conclusion:
RLS can probably be ruled out as unlikely.

67. Clairvoyant Rob James Lees:

Pros:
Jack is a common short nickname for James.
It seems strange how clairvoyant RJL three times offered police assistance just/shortly after the murders and letters.

Conclusion:
Although the few pros are intriguing there doesn't seem any much evidences reasons for RJL being connected with the murders.

68. James Willoughby Carnac:

Pros:
Carnac wrote a book claiming he was Jack the Ripper.
The name Jack could be from an anagram of JWC's name (Ja. C. or Ja. ...ac), and/or Jack is a short nickname for James.
Carnac's claim that he saw himself in MJK's mirror is a reasonable reason for why the murders stopped.

Cons:
Does his book say where he got the name Jack from, or does it say the JTR letters which mention the name are not his?
If he was so effected by seeing him self in MJK's mirror then why did he stay there for so long (hours)?

Conclusion:
This candidate is difficult to certainly rule out due to some evidences seeming somewhat compelling, though he probably can be ruled out for various reasons.

69. Mary Jane Kelly (aka Jane Kelly, Marie Jeanette Kelly, Black Mary, Mary Anne Kelly) :

Pros:
The "MJK" victim was only identified by an ear/hair and eyes.
Mary means "bitter".
Mary Jane Kelly, known as "Black Mary", which could suggest a dark side.
Jack/Jacky could be from her name Jane Kelly via Ja. K. or Ja. K...y. (MJK was sometimes known as Jane Kelly, not "Mary Kelly".) And/or Jack is a short nickname for John which her name Jane is related to. (The name Jack is also suggested to be from Celtic/British/Welsh Iach/Yakkios. MJK spoke Welsh. MJK wanted to go back home to Ireland.)
The name "(Saucy) Jacky" could also be either a man's or a woman's name.
MJK's name is similar to the dubious/ellusive suspects "Murrey Jacob Kallegberg" and "Marty Jim Kelly".
MJK is also the only victim to have 5 or 6 other major names/nicknames listed.
MJK has same name or names as John Kelly (relative of MJK, partner of Eddowes, and a witness) and James Kelly (JTR suspect), and Mary Ann Kelly.
Why "the great hush after MJK"?
Why was the WCVC disbanded month after the "Mary Kelly" murder? Why did the police scale back/down the investgation one month after the "MJK" murder?
Police and others would be less likely to suspect a woman.
A woman would be more easily trusted by the victims than a man, thus cancelling JTR having to be strong to manhandle the victims.
Some of the language/words in the JTR letters could match a woman/prostitute (saucy, cuss, Mister Lusk, nice).
A genetic analysis of the letters claimed the murderer could have been a woman. ("DNA from one of the letters was female".)
Some researchers detected an Irish dialect in the JTR letters. MJK "wanted to go back home to Ireland".
MJK was "an excellent scholar and an artist of no mean degree", and she was a woman, all three of which could match JTR having anatomical knowledge.
JTR's alleged "a big moustache and a floppy hat" sounds like a disguise.
Why did the MJK papers go missing unitl 1987 (a century after 1888)?
JTR being a female could explain why no seeming arousal of JTR and no violation/penetration of the victims.
A JTR poster had a woman-like person with a knife.
"The murders drew attention to the poor living conditions in the East End slums", so it is feasible that a prostitute could have been the perpetrator. (Why murder half a dozen prostitutes?)
In MJK's portrait which I recently saw in the JTR group/page in facebook her eyes etc looked pretty sinister/freaky/scary.
JTR worked quickly (surgical speed, etc). Women can multi-task unlike men.
Some think JTR was a local of Whitechapel.
JTR Letter said "from hell", and "Whitechapel was considered to be the most notorious criminal rookery in London. The area around Flower and Dean Street was described as perhaps the foulest and most dangerous street in the whole metropolis", and Dorset Street was called “the worst street in London”. Some forum posters said JTR must’ve been in or familiar with Spitalfields: "All the identified victims lived in the heart of the rookery in Spitalfields". And a source says "all roads lead to Dorset street". (Dorest Street is also only one street/block away on other side of main road from the other worst street & proposed location of JTR.) Sickert said he stayed in JTR's room, which sounds/seems abit like MJK's room.
Why were the clothes folded, etc?
Why the table behind MJK's door (as if afraid of a police raid or of someone walking in on something not wanted to be seen)?
I read through the 200 pages court case records for all the Whitechapel murders and nothing made sense (no clues or common thread) until I got to MJK (and nothing made sense in the cases after MJK).
Hanbury/Harbury Street where Chapman died is near MJK's room in Spitalfields on map that Edwards is pointing his finger at in photo.
And see alot more evidences (which can't be fitted in here) in my article on JTR & MJK in my 2rbetterthan1 blog and in my casebook forum thread/topic post.

Cons:
JTR is more likely to be male than female.
The name Jack is male. The name Jacky could be male or female. (I don't know whether Jacky was then a common nickname/name for women with name like Jacqueline or not.) The "MJK" victim might really have been MJK as supposed and thus she could be JTR. Plenty of Ripperologists reckon that Barnett's identification by ear/hair and eyes is good enough identification.
Some think the JTR letters were a hoax by a journalist.
Critics have said "multi-tasking isn't the same as surgical speed".

Conclusion:
MJK is one of the only suspects to have alot of actual close connections with the crimes and seemingly one of the only ones to make sense or explain the whole affair.
MJK has enough quantity and quality evidences to make her an equal to the best suspects/candidates, though there are some doubts whether she really could be JTR, and maybe someone like James Kelly might be more likely.


70. Jew(s) :

Pros:
The Goulston St "Jews" graffito implicates Mason(s) or Jew(s).
"Anderson wrote that a Polish Jew had been identified as the Ripper but that no prosecution was possible because the witness was also Jewish and refused to testify against a fellow Jew", and "Anderson claimed that the only witness who got a good look at the killer was Jewish".
MJK was seen talking with a Jewish man before her murder, and his saying to her "you will be alright for what I have told you" and putting right hand on shoulder might be significant? George Hutchinson claims he saw victim Jane Kelly and a man of Jewish appearance go to MJK's room and stay there for more than 3/4ers of an hour.
Jack could be from a name like Jacob.
A shawl supposed to have belonged to JTR victim Eddowes figures in the Kosminsky case, and shawls are Jewish.
Jews have been accused of sacrificing gentile children, and other wrongs.

Cons:
Jack/Jacky doesn't seem like a name that a Jew would have.
JTR letter said "I'm not a Yid (Jew) nor yet a foreign skipper but I'm your own light hearted friend."
Hutchinson's statement is disputed as being dubious/unreliable by some.

Conclusion:
The graffito and Anderson's statement and MJK's companion seem somewhat weighty, but otherwise the evidence for JTR being a Jew is scanty and small.


71. Victor Whitechurch:

Pros:
Whitechurch is similar to Whitechapel.

Conclusion:
No evidence except for date and interesting name similarity.

72. Lord Mayor James Whitehead:

Pros:
He was Mayor in 1888-1889, and the murders were in 1888.
Jack is a common short nick name for James.
Whitehead is similar to Whitechapel.

Conclusion:
No evidence except for date and interesting names similarities.

73. Vincent William van Gough:

Cons:
JTR letter said "I'm not ... a foreign skipper", but Gough was Dutch.
No link with name Jack.

Conclusion:
Evidence is poor.

74. Jill the Ripper or a Midwife:

Pros:
A midwife could be seen with bloody clothes without attracting suspicion.
Police and others would be less likely to suspect a woman.
A woman might have been less suspected and more trusted by the victims. This could cancel out the having to be strong eough to man-handle the victim.
"Big floppy hat and big moustache" sounds like a disguise.
"(Saucy) Jacky" could be female or male.
"DNA from one of the letters was female".
Some of the language/words in the JTR letters could match a woman/prostitute (saucy, cuss, Mister Lusk, nice).
JTR being a female could explain why no seeming arousal of JTR and no violation/penetration of the victims.
A JTR poster had a woman-like person with a knife.
"The murders drew attention to the poor living conditions in the East End slums", so it is feasible that a prostitute could have been the perpetrator. (Why murder half a dozen prostitutes?)
JTR worked quickly. Women can multi-task unlike men.
JTR is thought to have maybe had knowledge of female anatomy. A woman might be likely to have such knowledge.

Cons:
From other examples and evidences of world history JTR is more likely to be a male than a female.
The name Jack is male. The name Jacky could be male or female. If Jack/Jacky was JTR's name then someone named Jill is unlikely.

Other suspects/candidates of others or mine which I haven't covered here include:
John Courtenay
(Isaac Lewis) Jacobs
Henry James
Sir Edward Jenkinson
John Langan
George James Morris
Joseph Merrick
Brixton Dr Merchant
George Gissing.
Prime Minister William Ewart Gladstone.
Albert Bachert
Alfred Napier Blanchard
Edward Buchan
Churchill
Priest Eppstein (Turkish)
Alfred Gray (brief suspect)
Hyam Hyams
Jong (meaning "young, junior", Dutch killer)
Michael Kidney
Vassily Konovalov
The Lodger
Wolf Levisohn
Vevitski
William Magrath/Mcgrath (Irish-American)
Alois Szemeredy
Lord Salisbury (as part of a group conspiracy)
Queen Victoria (as part of a group conspiracy)
Sir Arthur Conan Doyle.
Admiral Jack(y) Fisher.
Inspector Edmund Reid.

In total overall conclusion my favoured candidates are Jane Kelly, James Kelly, James Carnac, clairvoyant James Lees, or possibly John Sawyer, or doubtfully Mason(s) or Jew(s), roughly in that order of descent from most favored to least.

References/sources/acknowledgements/credits include:
American psychic in TV show about JTR
Beautytruegood website
Damo Bullen
VSW Bambrough
BBC
Patricia Cornwell
The dozen murders court cases records
Casebook forum
JC Cooper Brewer's Book of Myth & Legend
James Willoughby Carnac's book
Sir AC Doyle
FBI Criminal Profile
Goulston Street "Juwes" Graffito
Stephen Knight
JTR Letters
Nelson's Dictionary of Dates
Adrian Room Brewer's Dictionary of Names
Walter Sickert
Joao Santos/Pereira forum posts & correspondence.
Wikipedia.