legendary frontiersman of the American West, who was an itinerant saloonkeeper, gambler, lawman, gunslinger, and confidence man. The first major biography, Stuart N. Lake's Wyatt Earp, Frontier Marshal (1931), written with Earp's collaboration, established the rather fictionalized portrait of a fearless lawman.

Earp and his four brothers—James C. (1841–1926), Virgil W. (1843–1906), Morgan (1851–82), and Warren B. (1855–1900)—spent their early lives in Illinois and Iowa but, toward the end of the American Civil War (1864), moved with their parents to San Bernardino, Calif. In 1868 the family moved back to Illinois, Wyatt and Virgil working on a Union Pacific Railroad crew on the way home. After the Earps moved to Lamar, Mo., Wyatt married in 1870 and was elected local constable, but upon his wife's death of typhoid, he took off, drifting from Indian Territory to various towns in Kansas. He worked as a police officer in Wichita (1875–76) and Dodge City (1876-77), went off to the gold rush in the Black Hills (1877–78), and returned to Dodge City as assistant marshal (1878–79), where he became noted as both lawman and gambler and where he befriended such gunmen as Doc Holliday and Bat Masterson.

Leaving Dodge City with his second wife, he went to New Mexico and then California, working for a time as a Wells Fargo guard, and ended up in 1878 in the Wild West town of Tombstone, Ariz. Most of the Earp family had congregated there, buying real estate and businesses; Wyatt became a gambler and guard in the Oriental Saloon, and his brother Virgil became town marshal.

By 1881 a feud had developed between the Earps and a gang led by Ike Clanton. The feud was resolved in the celebrated gunfight at the O.K. Corral (Oct. 26, 1881), pitting the Clanton gang against three Earp brothers (Virgil, Wyatt, and Morgan) and Doc Holliday. Three of the Clanton gang were killed, but Ike and another member escaped. The townspeople then discharged Virgil Earp, on suspicion that the gunning was murder rather than crime fighting.

In March 1882 Morgan Earp was killed by unknown assassins, and Wyatt, his brother Warren, and some friends subsequently killed at least two suspects. Wyatt was accused of murder, and he fled, moving first to Colorado, then to several boomtowns in the West, and eventually to California. He settled there, where he supported himself variously by police work, gambling, mining, and real-estate deals.