Family feuds in the United States had occurred on October 26, 1881, and was itself the climax of the Earp–Clanton family feud, simmering since the summer of 1880. Tensions between the Earps and both the Clantons and McLaurys increased through 1881, culminating in the historic gunfight. At the O.K. Corral, three deputized Earp brothers, Wyatt, Morgan and Virgil, along with Doc Holliday, had killed Billy Clanton, Frank McLaury and Tom McLaury. The Clanton and McLaury families were aligned with the "Outlaw Cowboys", a loosely knit outlaw group of families, friends and acquaintances then living in surrounding Cochise and Pima counties. The Earp Vendetta ride was a
Hour of the Gun not only survives the gunfight, but is a major antagonist thereafter. Where "Gunfight at the O.K. Corral" is more about the main gun battle, this film begins with the gunfight and moves forward from there. Because Hal B. Wallis had scripted everything in the earlier "Gunfight at the O.K. Corral", Sturges was disappointed with that film. "Hour of the Gun" is more of a psychological "melancholy character study". James Garner also played the lead as Wyatt Earp in a different movie filmed more than two decades later, Blake Edwards's "Sunset" (1988), a comedy thriller based on the 1920s period during