Cassidy, Butch (13 April 1866–1908? or 1937?), outlaw and rancher, was born Robert LeRoy Parker in Beaver, Utah, the oldest of thirteen children of Maximillian Parker and Ann Gillies, small ranchers. His British-born parents were Mormons who pulled handcarts across the Great Plains to Utah in 1856. As a teenager growing up near Circleville, Utah, Parker was influenced by cowhand Mike Cassidy, who taught him to ride, shoot, rope, brand, and rustle cattle and horses. Under suspicion by local authorities, Parker and Cassidy left Utah in 1884. Parker went to Telluride, Colorado, where he found employment with a mining company. There he met Tom McCarty, a bank robber, and soon joined the McCarty Gang. On 24 June 1889, he participated in a bank robbery at Telluride, after which he drifted into Wyoming. Because he was now wanted by the law, Parker took the surname of his boyhood idol, calling himself George Cassidy. While working in a butcher’s shop in Rock Springs, Wyoming, he became Butch Cassidy....