Robert LeRoy Parker (April 13, 1866 – November 7, 1908), better known as Butch Cassidy, was an American cowboy, train and bank robber and the leader of a gang of criminal outlaws known as the "Wild Bunch" in the Old West.
Parker engaged in criminal activity for more than a decade at the end of the 19th century and the early 20th century, but the pressures of being pursued by law enforcement, notably the Pinkerton detective agency, forced him to flee the United States. He fled with his accomplice Harry Longabaugh, known as the "Sundance Kid", and Longabaugh's girlfriend Etta Place. The trio traveled first to Argentina and then to Bolivia, where Parker and Longabaugh are believed to have been killed in a shootout with the Bolivian Army in November 1908; the exact circumstances of their fate are unclear.
Parker's life and death have been extensively dramatized in film, television and literature, and he remains one of the best-known icons of the "Wild West" mythos in modern times.
Robert LeRoy Parker was born on April 13, 1866, in Beaver, Utah Territory, the first of thirteen children of English immigrants Maximillian Parker and Ann Campbell Gillies. The Parker and Gillies families had converted to the Church of Jesus Christ of Latter-Day Saints while still living in the United Kingdom. Maximillian Parker was twelve years old when his family arrived in Salt Lake City in 1856 as Mormon pioneers. Ann Gillies was born and lived in Newcastle upon Tyne, northeast England before immigrating to the U.S. with her family in 1859 at age 14. The couple were married in July 1865.
Robert Parker grew up on his parents' ranch near Circleville.
Parker fled his home as a teenager and, while working on a dairy ranch, met cattle thief Mike Cassidy. He subsequently worked on several ranches, in addition to a brief apprenticeship with a butcher in Rock Springs, Wyoming Territory, where he got his nickname (by the word "butcher", which morphed later into "Butch"), to which he soon added the last name Cassidy in honor of his old friend and mentor.
Butch Cassidy's first criminal offense was minor. Around 1880 he journeyed to a clothier shop in another town but found it closed. He broke into the shop and stole a pair of jeans and some pie, leaving an IOU promising to pay on his next visit. The clothier pressed charges, but Cassidy was acquitted by a jury. He continued to work on ranches until 1884, when he moved to Telluride, Colorado, ostensibly to seek work, but perhaps to deliver stolen horses to buyers. Cassidy led a cowboy's life in Wyoming Territory and Montana Territory before returning to Telluride in 1887, where he met Matt Warner, the owner of a racehorse. Cassidy and Warner raced the horse at various events, dividing the winnings between them.
Cassidy's first bank robbery took place on June 24, 1889, when he, Warner, and two of the McCarty brothers robbed the San Miguel Valley Bank in Telluride. Businessman L. L. Nunn had taken a controlling interest in the bank the previous year. The robbers stole around $21,000 (equivalent to $752,000 in 2025), after which they fled to the Robbers Roost, a remote hideout in the southeastern corner of Utah Territory.
In 1890, Cassidy purchased a ranch on the outskirts of Dubois, Wyoming. This location was across the state from the notorious Hole-in-the-Wall, a natural geological formation, and a popular hideout for outlaw gangs, including Cassidy's, during the era. Cassidy's ranching was possibly a façade for clandestine activities, perhaps with Hole-in-the-Wall outlaws, as he was never financially successful at ranching. Cassidy's ranch used the "unmistakable brand" of "Reverse-E, Box, E".
In early 1894, Cassidy became involved romantically with rancher and outlaw Ann Bassett. Her father was a rancher who did business with Cassidy, supplying him with fresh horses and beef. That same year, Cassidy was arrested at Lander, Wyoming, for stealing horses and possibly for running a protection racket among the local ranchers there. He was imprisoned in the Wyoming State Prison in Laramie, where he served eighteen months of a two-year sentence; he was released and pardoned in January 1896 by Governor William Alford Richards. He became involved briefly with Bassett's older sister Josie before returning to Ann.
Cassidy associated with a wide circle of criminals, most notably his closest friend William Ellsworth "Elzy" Lay, Harvey "Kid Curry" Logan, Ben "The Tall Texan" Kilpatrick, Harry Tracy, Will "News" Carver, Laura Bullion and George "Flat Nose" Curry, who collectively became the so-called "Wild Bunch". The gang assembled sometime after Cassidy's release from prison in 1896 and took its name from the Doolin–Dalton gang, also known as the "Wild Bunch".
On August 13, 1896, Cassidy, Lay, Logan and Bob Meeks robbed the bank at Montpelier, Idaho, escaping with roughly $7,000. Cassidy recruited Harry Alonzo Longabaugh, also known as the "Sundance Kid", into the gang soon after.
Bassett, Lay and Lay's girlfriend Maude Davis all joined Cassidy at Robbers Roost in early 1897. The four hid there until early April, when Lay and Cassidy sent the women home so that the men could plan their next robbery. They ambushed a small group of men carrying the payroll of the Pleasant Valley Coal Company in the mining town of Castle Gate, Utah, on April 22, 1897, stealing a sack of silver coins, with which they fled back to the Robbers Roost. Contemporary police records compiled by Portland Detective Day identified the gang leader as "George Parker, his real name, alias Tom Cassidy and Butch Cassidy," noting that following the Castle Gate robbery Cassidy was caught and sentenced to two years in the Wyoming Penitentiary before being pardoned.
On June 2, 1899, the gang robbed a Union Pacific Overland Flyer passenger train near Wilcox, Wyoming, a robbery that earned them a great deal of notoriety and resulted in a massive manhunt. Many notable lawmen took part in the hunt but did not find them. Kid Curry and George Curry had a shootout with lawmen following the train robbery, killing Sheriff Joe Hazen. Following the robbery, the gang's escape route took them north of the Union Pacific line, around the Powder River country where Sheriff Hazen was killed, then over the Big Horn Mountains and down through the Wind River country to the Sweetwater before regaining the Union Pacific at Green River. Among those subsequently arrested was James C. Lyle, a former member of Torrey's Rough Riders, who was captured in Rigby, Idaho in October 1899 on information provided by an associate; an informant identified the seven-man gang as including two McCartys, Lyle, Cassidy, and three others. Tom Horn, a killer-for-hire employed by the Pinkerton National Detective Agency, was told by explosives expert Bill Speck about the Hazen shooting. Pinkerton detective Charlie Siringo was then assigned the task of capturing the outlaws. He became friends with Elfie Landusky, who was using the last name Curry after becoming pregnant by Kid Curry's brother Lonny Logan, and Siringo intended to locate the gang through her.
On July 11, 1899, Lay and others were involved in a Colorado and Southern Railroad train robbery near Folsom, New Mexico, which Cassidy might have planned and personally directed. A shootout ensued with local law enforcement, during which Lay killed Sheriff Edward Farr and Henry Love; Lay was convicted of murder and sentenced to life imprisonment at the New Mexico State Penitentiary.
The Wild Bunch typically separated following a robbery and fled in different directions, later reuniting at a predetermined location such as the Hole-in-the-Wall, Robbers Roost, or Fannie Porter's brothel in San Antonio.
Cassidy approached Utah Governor Heber Wells to negotiate an amnesty. Wells advised him to ask the Union Pacific Railroad to drop their criminal complaints against him, and Union Pacific chairman E. H. Harriman attempted to meet with Cassidy through Warner. On August 29, 1900, Cassidy, Longabaugh, and others robbed Union Pacific train No. 3 near Tipton, Wyoming, breaking Cassidy's earlier promise to the governor of Wyoming and ending any chance for amnesty.