Virgil Walter Earp was both deputy U.S. Marshal and Tombstone, Arizona, City Marshal when he led his younger brothers Wyatt and Morgan, and Doc Holliday, in a confrontation with outlaw Cowboys at the Gunfight at the O.K. Corral on October 26, 1881. They killed brothers Tom and Frank McLaury and Billy Clanton. 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. All four lawmen were charged with murder by 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.

Tom McLaury was an American outlaw. He and his brother Frank owned a ranch outside Tombstone, Arizona, Arizona Territory during the 1880s. He was a member of a group of outlaws Cowboys and cattle rustlers that had ongoing conflicts with lawmen Wyatt, Virgil, and Morgan Earp. The McLaury brothers repeatedly threatened the Earps because they interfered with the Cowboys' illegal activities. On October 26, 1881, Tom and Frank were both killed in the Gunfight at the O.K. Corral in Tombstone, Arizona Territory. The Tombstone shootout was his only gunfight.