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Francis Tumblety (c. 1833 – May 28, 1903) was an Irish-born American medical quack who earned a small fortune posing as an "Indian Herb" doctor throughout the United States and Canada. He was an eccentric self-promoter and was often in trouble with the law. He has been put forward as a suspect for the notorious and unsolved Jack the Ripper murder spree in Whitechapel, London, in 1888.