Apart from Leonard Matters, many people had their own theories about Jack the Ripper. Some believe he was a doctor, while others say he was a butcher. The suspects came from different walks of life, but there were some who were more suspicious than others. One of them was Aaron Kosminski, the man whose DNA was allegedly found on the shawl. Kosminski was in his early 20s and worked as a hairdresser during the Jack the Ripper murders, according to Whitechapel Jack. He was a Polish Jew who spent time in an asylum.
Another popular name connected to the Whitechapel murders was Walter Sickert, a painter who said he once lived in Jack the Ripper’s former home. He also titled one of his works “Jack the Ripper’s Bedroom.” There’s no concrete evidence confirming he was Jack the Ripper, and he wasn’t in London when some of the murders occurred.
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Many suspect that serial killer Dr. Thomas Cream was Jack the Ripper. The doctor murdered his victims using poison, which doesn’t fit Jack the Ripper’s profile, but before he was executed for his crimes in 1892, he reportedly said, “I am Jack … ” but was killed before finishing his sentence, per Mental Floss.
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