Billy Clanton died in 1881.
William Harrison Clanton ( 1862 -- October 26 , 1881 ) was an outlaw Cowboy in Cochise County , Arizona Territory . 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 .