- Born
- Height6′ 2½″ (1.89 m)
- Mark O'Brien is an award-winning actor and filmmaker. He is an English major with a Bachelor of Arts from Memorial University of Newfoundland. His mother was a nurse and his father a truck driver. Mark also has three older sisters. He married actress Georgina Reilly on January 6, 2013 after meeting on the set of the hit show Republic of Doyle.- IMDb mini biography by: Anonymous
- SpouseGeorgina Reilly(January 6, 2013 - present) (1 child)
- ChildrenPenelope Florence
- RelativesSibling(Sibling)
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