Longbaugh is a surname most commonly associated with the infamous outlaw, Butch Cassidy, whose real name was Robert LeRoy Parker. He was a prominent figure in the American Wild West during the late 19th century and was known for his involvement in various criminal activities, including bank and train robberies. Longbaugh was Cassidy's partner in crime and is often referred to by his alias, The Sundance Kid. The name Longbaugh has also been used in popular culture, particularly in films and literature that depict the lives of outlaws and the Wild West era. The story of Longbaugh and his companions has inspired numerous adaptations, showcasing their adventures and the challenges they faced while evading law enforcement.