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
Wyatt Earp use Frank Waters' "Earp Brothers of Tombstone", as their primary source for material that presents Wyatt Earp as something of a villainous monster, aided and abetted by his brothers who were almost brutes. Waters detested the Earps so badly that he presented a book that was terribly flawed, poorly edited, and brimming with prevarications. In his other work, Waters is poetic. In the "Earp Brothers of Tombstone", he is little more than a tabloid hack, trying to slander someone he dislikes. To date, no reason has been uncovered for the bias Frank Waters exhibited against Wyatt Earp and his brothers.