Facts: - death place: north hollywood , california , u.s. - years active: 1990 -- 2002 - birth name: glenn martin christopher francis quinn - death date: 3 december 2002 - birth date: 28 may 1970 - image: glenn quinn.jpg - birth place: dublin , ireland - occupation: actor Based on these bullet points, write a short biography describing the life of glenn quinn .
glenn martin christopher francis quinn -lrb- may 28 , 1970 -- december 3 , 2002 -rrb- 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 '' .