Matthew D. Mann
Matthew Derbyshire Mann (July 12, 1845 – March 2, 1921) was an American gynecologist and one of the surgeons who operated on President William McKinley after he was shot on the grounds of the Pan American Exposition on September 6, 1901, in Buffalo, New York, by anarchist Leon F. Czolgosz. Life and career. Mann was born in Utica, New York, the son of New York State Senator Charles Addison Mann (1803–1860) and Emma () Mann (1813–1887). He graduated from Yale University in 1867, and from the Columbia University College of Physicians and Surgeons in 1871. After two years of  study in Heidelberg, Paris, Vienna, and London, he practiced in New York until 1879, then in Hartford, Connecticut, until 1882, and thereafter was professor of gynecology at the University of Buffalo until 1910. He worked as a gynecologist at the Buffalo General Hospital, and in 1894 was president of the American Gynecological Society. He edited an "American System of Gynecology" (two volumes, 1887–1888), and wrote "Immediate Treatment of Rupture of the Perineum" (1874) and "Manual of Prescription Writing" (1878; sixth edition, revised, 1907). Mann died in Buffalo on March 2, 1921.