Sherman W. McMasters was an outlaw, Texas Ranger, and lawman best-known for his participation in the Earp Vendetta Ride. Born in 1853 in Illinois, McMasters headed west where he gained a reputation as a gunfighter. He was in Dodge City, Kansas at the same time as were Wyatt Earp and Doc Holliday, where he made friends with the pair. There, he also reportedly killed a man in self-defense after a gambling dispute in a saloon.