Claim: Wyatt Earp was an American citizen.
Evidence: Wyatt Berry Stapp Earp -LRB- March 19 , 1848 -- January 13 , 1929 -RRB- was an American Old West gambler , a deputy sheriff in Pima County , and deputy town marshal in Tombstone , Arizona Territory , who took part in the gunfight at the O.K. Corral , during which lawmen killed three outlaw cowboys.