On August 16 , 1889 , a gunfight broke out Process_start at the county courthouse , in which four persons were killed Killing , including the sheriff .

Despite its name , the gunfight Hostile_encounter did not take place Process_start within or next to the O.K .

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 .

The gunfight was not the end of the conflict Hostile_encounter .