07.05.1984 (40 gadi) (Canada )
Mark O'Brien may refer to: Mark O'Brien (actor) (born 1984), Canadian actor Mark O'Brien (cyclist) (born 1987), Australian cyclist Mark O'Brien (footballer, born 1984), Irish footballer, plays for Shelbourne F.C. Mark O'Brien (footballer, born 1992), Irish footballer, plays for Newport County A.F.C. Mark O'Brien (poet) (1949–1999), American poet and advocate for the disabled