Mark O'Brien
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).
- Popularity : 11.49
- Known For : Acting
- Birthday : 1984-05-07
- Place of Birth : St. Johns, Newfoundland, Canada