Mark O'Brien
Known As: Mark O’BrienBorn: 7th May, 1984Age: 42Birthplace: St. Johns, Newfoundland, CanadaBiography: Mark O'Brien (born May 7th, 1984) is a Canadian actor and director. He is best known for playing the role of Des Courtney in Republic of Doyle (2010) and Tom Rendon in Halt and Catch Fire (2014).
