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 and the Sundance Kid alerts the local police, leading to a gunfight with the outlaws. They take cover in a building but are both seriously wounded, after Butch makes a futile attempt to run to the mules in order to bring more ammunition, while Sundance provides cover fire. As dozens of Bolivian soldiers surround the area, Butch suggests the duo's next destination should be Australia. They charge out of the building guns blazing. William Goldman first came across the story of Butch Cassidy in the late 1950s and researched it on and off for eight years before sitting down to write the screenplay. Goldman