Premise: Virgil Walter Earp ( July 18 , 1843 -- October 19 , 1905 ) was both Deputy U.S. Marshal and Tombstone , Arizona City Marshal when he led his brothers Morgan and Wyatt and Doc Holliday in a confrontation with outlaw Cowboys at the Gunfight at the O.K. Corral on October 26 , 1881 . Wyatt Earp . He is often regarded as the central figure in the shootout in Tombstone , although his brother Virgil was Tombstone city marshal and Deputy U.S. Marshal that day , and had far more experience as a sheriff , constable , marshal , and soldier in combat .
Hypothesis: Wyatt Earp's brother graduated in 1841.
Label: CONTRADICTION