Biography: Glenn Martin Christopher Francis Quinn was an Irish actor in television and film, known for playing Mark Healy in the American sitcom Roseanne, and Doyle, a half-demon, on the 1999–2004 television series Angel, a spin-off series of the television series Buffy the Vampire Slayer.
Born: May 28, 1970, Dublin
Died: December 03, 2002 (age 32), North Hollywood
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