Butch Cassidy Butch Cassidy Robert Leroy Parker (April 13, 1866 – November 7, 1908), better known as Butch Cassidy, was a notorious American train robber and bank robber, and the leader of a gang of criminal outlaws known as the "Wild Bunch" in the American Old West. After participating in criminal activity in the United States for more than a decade at the end of the 19th century, the pressures of being pursued by law enforcement, notably by the Pinkerton detective agency, forced Parker to flee the country with an accomplice, Harry Alonzo Longabaugh, known as the "Sundance Kid", and Longabaugh's girlfriend
Butch Cassidy Hazen shooting, and then passed this information to Pinkerton detective Charlie Siringo, who was assigned the task of capturing the outlaws. The gang escaped into the Hole-in-the-Wall. Siringo became friends with Elfie Landusky, who was using the last name Curry after allegedly becoming pregnant by Kid Curry's brother, Lonny. Through her, Siringo intended to locate the gang. On July 11, 1899, Lay and others were involved in a Colorado and Southern Railroad train robbery near Folsom, New Mexico, which Cassidy may have planned and personally directed. A shootout ensued with local law enforcement, during which Lay killed Sheriff Edward Farr