John O'Brien (born 1932)O'Brien family✓Confirmed how we know thisVitalsBorn1932✓Confirmed how we know thisFamilyFatherAlex O'Brien (born 1906)MotherIrene O'Brien (born 1910)Sources1940, ED 68-5, p.89, line 19View John O'Brien's family tree · See this person in the family network · Find how you are related