Glenn Quinn
Glenn Quinn Born Glenn Martin Christopher Francis Quinn (1970-05-28)May 28, 1970 Dublin, Ireland Died December 3, 2002(2002-12-03) (aged 32) North Hollywood, California, U.S. Occupation Actor Years active 1990–2002 Glenn Martin Christopher Francis Quinn (May 28, 1970 – December 3, 2002) 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.