Question: When did The Cowboys fight with Wyatt, Virgil and Morgan Earp and Doc Holliday?

Context paragraphs:
Hour of the Gun: Hour of the Gun is a 1967 Western film depicting Wyatt Earp and Doc Holliday during their 1881 battles against Ike Clanton and his brothers in the Gunfight at the O.K. Corral, and the gunfight's aftermath in and around Tombstone, Arizona, starring James Garner as Earp, Jason Robards as Holliday, and Robert Ryan as Clanton.  The movie was directed by John Sturges.

Wyatt Earp: Return to Tombstone: Wyatt Earp: Return to Tombstone is a 1994 independent film starring Hugh O'Brian as Wyatt Earp, featuring new footage mixed with colorized sequences from O'Brian's 1955-1961 television series "The Life and Legend of Wyatt Earp".  The supporting cast for the new footage includes Bruce Boxleitner, Paul Brinegar, Harry Carey, Jr., Bo Hopkins, and Don Meredith.  The colorized flashback archival footage from the original television series features Douglas Fowley as Doc Holliday and Lloyd Corrigan as Ned Buntline.  The movie was directed by Paul Landres and Frank McDonald.

Tombstone, the Town Too Tough to Die: Tombstone: The Town Too Tough to Die is a 1942 Western film directed by William McGann and starring Richard Dix as Wyatt Earp, Kent Taylor as Doc Holliday and Edgar Buchanan as Curly Bill Brocious.  The supporting cast of this movie about the gunfight at the OK Corral also features Rex Bell as Virgil Earp and Victor Jory as Ike Clanton.

Earp Vendetta Ride: The Earp Vendetta Ride was a search by Deputy U.S. Marshal Wyatt Earp, leading a federal posse, for outlaw Cowboys they believed had ambushed and maimed Virgil Earp and killed Morgan Earp.  The Earp brothers had been attacked in retaliation for the deaths of three Cowboys in the Gunfight at the O.K. Corral on October 26, 1881.  From March 20 to April 15, 1882, the federal posse searched southeast Cochise County, Arizona Territory for suspects in both Virgil's and Morgan's attacks.  Several suspects had been freed by the court, owing in some cases to legal technicalities and in others to the strength of alibis provided by Cowboy confederates.  Up to this point, Wyatt had relied on the legal system to bring the Cowboys to justice.  Now he felt he had to take matters into his own hands.

Ike Clanton: Joseph Isaac "Ike" Clanton (1847 – June 1, 1887) was a member of a loose association of outlaws known as The Cowboys who clashed with lawmen Wyatt, Virgil and Morgan Earp as well as Doc Holliday.  On October 26, 1881, Ike was present at the Gunfight at the O.K. Corral in the boomtown of Tombstone, Arizona Territory but was unarmed and ran from the gunfight, in which his 19-year-old brother, Billy, was killed.

Virgil Earp: 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.  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.

Gunfight at the O.K. Corral: The Gunfight at the O.K. Corral was a 30-second shootout between lawmen and members of a loosely organized group of outlaws called the Cowboys that took place at about 3:00 p.m. on Wednesday, October 26, 1881 in Tombstone, Arizona Territory.  It is generally regarded as the most famous shootout in the history of the American Wild West.  The gunfight was the result of a long-simmering feud, with Cowboys Billy Claiborne, Ike and Billy Clanton, and Tom and Frank McLaury on one side and town Marshal Virgil Earp, Special Policeman Morgan Earp, Special Policeman Wyatt Earp, and temporary policeman Doc Holliday on the other side.  All three Earp brothers had been the target of repeated death threats made by the Cowboys, who objected to the Earps' interference in their illegal activities.  Billy Clanton and both McLaury brothers were killed.  Ike Clanton claimed that he was unarmed and ran from the fight, along with Billy Claiborne.  Virgil, Morgan, and Doc Holliday were wounded, but Wyatt Earp was unharmed.  The shootout has come to represent a period of the American Old West when the frontier was virtually an open range for outlaws, largely unopposed by law enforcement officers who were spread thin over vast territories.

Morgan Earp: Morgan Seth Earp (April 24, 1851 – March 18, 1882) was a Tombstone, Arizona Special Policeman when he helped his brothers Virgil and Wyatt and Doc Holliday confront outlaw 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.

O.K. Corral hearing and aftermath: The O.K. Corral hearing and aftermath was the direct result of the 30-second Gunfight at the O.K. Corral in Tombstone, Arizona Territory on October 26, 1881.  During that confrontation, Deputy U.S. Marshal and Tombstone Town Marshal Virgil Earp, Assistant Town Marshal Morgan Earp, and temporary deputy marshals Wyatt Earp and Doc Holliday shot and killed Billy Clanton, and Tom and Frank McLaury.  Billy's brother Ike, who had repeatedly threatened to kill the Earps for some time, had been present at the gunfight but was unarmed and fled.  He filed murder charges against the Earps and Doc Holliday on October 30.

Thomas Fitch (politician): Thomas Fitch (January 27, 1838 – November 12, 1923) was an American lawyer and politician.  He defended President Brigham Young of The Church of Jesus Christ of Latter-day Saints and other church leaders when Young and his denomination were prosecuted for polygamy in 1871 and 1872.  He also successfully defended Virgil, Morgan, and Wyatt Earp along with Doc Holliday when they were accused of murdering Billy Clanton, and Tom and Frank McLaury during the October 25, 1881 Gunfight at the O.K. Corral.

Supporting paragraphs: Ike Clanton Morgan Earp
Answer: October 26, 1881.