Warren Earp. Grave Site: Pioneer Cemetery. Year Buried: 1900. Where: Willcox, Arizona. Warren Baxter Earp rode with his infamous brother Wyatt and others on the legendary 1882 Vendetta Ride. On July 6, 1900, the quick-tempered Warren got in a fight with rancher Henry Hooker’s range boss, Johnny Boyett, who gunned Warren down in a Willcox saloon.