Morgan Seth Earp (April 24, 1851 – March 18, 1882) was an American sheriff and lawman. He served as Tombstone, Arizona's Special Policeman when he helped his brothers Virgil and Wyatt, as well as Doc Holliday, confront the outlaw Cochise County Cowboys in the Gunfight at the O.K. Corral on October 26, 1881. All three Earp brothers had been the target of repeated death threats made by the Cowboys who were upset by the Earps' interference in their illegal activities. The lawmen killed Cowboys Tom and Frank McLaury and Billy Clanton. All four lawmen were charged with murder by Billy's older brother, Ike Clanton, who had run from the gunfight. During a month-long preliminary hearing, Judge Wells Spicer exonerated the men, concluding they had been performing their duty. Friends of the slain outlaws retaliated, and on December 29, Cowboys ambushed Virgil, leaving him maimed. Two and a half months later, on March 18, 1882, they ambushed Morgan, shooting him at night through the window of a door while he was playing billiards and killed him. The Cowboys suspected in both shootings were let off on technicalities or lack of evidence. Wyatt Earp felt he could not rely on the criminal justice system and decided to take matters into his own hands. He concluded the only way to get justice for his murdered brother was to avenge his death. Wyatt assembled a posse that included their brother Warren Earp and set out on a vendetta to kill those they felt were responsible. Morgan married Louisa Alice Houston sometime in the 1870s. They lived in Montana before joining his brothers in Tombstone. Louisa was staying with his parents in California when Morgan was murdered. Early life Morgan Earp was born in Pella, Iowa, to Nicholas Porter Earp (1813–1907), a cooper and farmer, and his second wife Virginia Ann Cooksey (1821–1893). Brothers' Service in Civil War and Later When elder brothers Newton, James, and Virgil went off to the American Civil War, they left their young teenage brothers Wyatt and Morgan to tend the family farm. James and Morgan grew up close, with a shared wish for adventure and a dislike of farming. Before adulthood, teen-aged Morgan followed James Earp to Montana for a couple of years. Later he was with Wyatt on the Western frontier. In spring 1868, his father Nicholas Porter Earp and his siblings Ginnie, Warren, and Adelia returned to