William F. Claiborne (October 21, 1860 – November 14, 1882), was an American outlaw and gunfighter in the American Old West who was one of the survivors of the Gunfight at the O.K. Corral. Claiborne was born in Yazoo County, Mississippi. As a young man he worked for John Slaughter helping to drive his cattle from Texas to Tombstone area in 1880. He worked as a ranch hand, miner and driver for a mining company. In 1881 William "Billy the Kid" Bonney was killed. After Bonney's death Claiborne demanded that others call him "Billy the Kid" causing him to kill one to three men who refused. Claiborne, who had possibly been a cattle rustler with the Cowboys, was readily enlisted as a confrontation with Wyatt, Virgil, and Morgan Earp became imminent, with the common feeling among the Cowboys that Claiborne would even the odds; Claiborne was with Ike Clanton when the group was confronted by the Earps and Doc Holliday at the O.K. Corral. Although popular western lore claims Claiborne was said to have fought less than admirably, firing one or two wild shots toward Virgil Earp, Claiborne said later that he was not armed at the time, and none of the Earps took him to be so.