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12 Celebrities You Didn’t Know Had Died

“Glenn Quinn” by Source. Licensed under Fair use via Wikipedia

12) Glenn Quinn

A native of Ireland, Quinn gained instant celebrity status playing Becky’s boyfriend, Mark, on Roseanne. After the show ended, Quinn had continued success playing Doyle on Angel. Sadly, his life ended abruptly when he was found deceased on a couch in North Hollywood. Police and autopsy reports revealed he died from an accidental heroin overdose.