Billy Clanton worked on a ranch in Tombstone, Arizona.
William Harrison Clanton ( 1862 -- October 26 , 1881 ) was an outlaw Cowboy in Cochise County , Arizona Territory . He , along with his father Newman Clanton and brother Ike Clanton , worked a ranch near Tombstone and stole livestock from Mexico and later U.S. ranchers . On October 26 , 1881 , Billy , Tom McLaury , and Frank McLaury were killed in the Gunfight at the O.K. Corral in the boomtown of Tombstone , Arizona Territory . Tombstone is a historic city in Cochise County , Arizona , United States , founded in 1879 by prospector Ed Schieffelin in what was then Pima County , Arizona Territory .