George McKelvey was a lawman in Charleston, Cochise County, Arizona during the 1880s. He is known for arresting Johnny-Behind-the-Deuce (Michael O'Rourke) on January 14, 1881 after he killed Tombstone Mill and Mining Company’s chief engineer Phillip Schneider in apparent self-defense. Schneider was well-liked, and residents of Charleston formed an angry mob and threatened to lynch O'Rourke. After the mob was calmed down, McKelvey joined a 15-man posse, including Cochise County Deputy Sheriff Johnny Behan and Marshal Ben Sippy, who guarded O'Rourke during the 10 miles (16 km) ride to Tucson.