To answer the question, consider the following: 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.
about 3 : 00 p.m. on Wednesday , October 26 , 1881
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.

When did the gunfight at the ok corral happen?

To answer the above question, the relevant sentence is: The national cemetery was established during the Civil War on the grounds of Arlington House, which had been the estate of the family of Confederate general Robert E. Lee's wife Mary Anna (Custis) Lee (a great-granddaughter of Martha Washington).
the family of Confederate general Robert E. Lee 's wife Mary Anna ( Custis ) Lee ( a great - granddaughter of Martha Washington )
Passage: The national cemetery was established during the Civil War on the grounds of Arlington House, which had been the estate of the family of Confederate general Robert E. Lee's wife Mary Anna (Custis) Lee (a great-granddaughter of Martha Washington). The Cemetery, along with Arlington House, Memorial Drive, the Hemicycle, and the Arlington Memorial Bridge, form the Arlington National Cemetery Historic District, listed on the National Register of Historic Places in April 2014. Like nearly all federal installations in Arlington County, it has a Washington, D.C. mailing address.

Question: Based on this passage, who owned arlington cemetery before the civil war?

The important part for answering this question is: While he was best known for his portrayal of Mark Healy on the popular' 90s family sitcom Roseanne, Quinn also amassed a large fan base for his portrayal of Doyle, a half-demon, on Angel, a spin-off series of Buffy the Vampire Slayer.
Glenn Martin Christopher Francis Quinn
Glenn Martin Christopher Francis Quinn (May 28, 1970 -- December 3, 2002) was an Irish actor. While he was best known for his portrayal of Mark Healy on the popular' 90s family sitcom Roseanne, Quinn also amassed a large fan base for his portrayal of Doyle, a half-demon, on Angel, a spin-off series of Buffy the Vampire Slayer.

Answer this question based on the passage: who played mark on the tv show roseanne?