Mark O'Brien

Mark O'Brien

Mark O'Brien

  • Popularity: 4.309
  • Known For: Acting
  • Birthday: 1984-05-07
  • Place of Birth: St. Johns, Newfoundland, Canada
  • Homepage:
  • Also Known As: Mark O’Brien

Biography: 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).

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