Nathan Kaminski
Kaminski was born in 1865 and was a Jewish boot maker, who resided at 15 Black Lion Yard. Diagnosed as suffering from syphilis, he was treated at the Whitechapel workhouse infirmary and was discharged as 'cured' six weeks later. Author Martin Fido, in the book The Crimes Detection And Death of Jack The Ripper, suggests that Kaminski was in fact the real Leather Apron, and that John Pizer was identified in error. This hypothesis is based on the fact that Kaminski's age, race and occupation are identical to David Cohen, and therefore they must be one and the same. Fido suggests that following the hunt for Leather Apron, Kaminski changed his name and occupation prior to his attack of raving mania. Therefore, when he was arrested it was under the incorrect name of David Cohen. Fido surmises that Kaminski was the real second suspect named in the Macnaghten Memoranda, and that the name Kosminsky was used in error. Little is known about what precisely happened to Kaminski and he appears to have simply vanished from the face of the earth. If Kaminski was therefore Cohen, why were the police still on Ripper alert after Cohen's death.
