James Thomas Sadler (c. 1837-1906 or 1910), also named Saddler in some sources, was an English merchant sailor who officiated interchangeably as a machinist and stoker. In 1891, the then-53-year-old was accused of killing prostitute Frances Coles. Sadler was placed under arrest, and a mob almost lynched him at the exit of a police station. Eventually, he was dismissed by police for having a solid alibi, and obtained compensation from a newspaper that had branded him as Jack the Ripper.