The gunfight was the result of a long-simmering feud Competition , with Cowboys Billy Claiborne , Ike and Billy Clanton , and Tom and Frank McLaury on one side and town Marshal Virgil Earp , Special Policeman Morgan Earp , Special Policeman Wyatt Earp , and temporary policeman Doc Holliday on the other side .

Billy Clanton and both McLaury brothers were killed Killing .