Background
O'Brien was born to Maureen (née Wright) and Michael O'Brien on February 8, 1946. He was born in Dalkey village, Co. Dublin, and grew up in nearby Glasthule.
O'Brien was born to Maureen (née Wright) and Michael O'Brien on February 8, 1946. He was born in Dalkey village, Co. Dublin, and grew up in nearby Glasthule.
He was educated at Presentation College at Westland Row, Dublin, before going on to join the Abbey School of acting.
He also appeared in many films and television programs. He was the youngest of five children. After completing his leaving cert O'Brien started a building apprenticeship.
Upon being accepted to the Abbey School of acting in the mid-1960s however, he took a year out of his apprenticeship to try a career as an actor, and never went back to the construction industry. In his career as an Abbey actor he took part in 130 theatre productions, including 27 world premiers. His first part was in the play Galileo in 1965.
His last Abbey performance was appearing as Tom Mooney in Drama at Inis-Is Life Worth Living (2005). Niall toured internationally with the Abbey in Europe, Russia and much of the US. O'Brien also appeared in numerous television and film appearances throughout his career. These include the parts of Bernard in Ryan's Daughter (1971), Kay in Excalibur (1981), Owen McCarthy in The Year of the French (1982), Agent Rurik in Gorky Park (1983), Captain Twilley in Half Moon St (1986), Det.
Insp. Isaac Gissing in Rawhead Rex (1986), Police Superintendent in The Playboys (1992), Josie McCarthy in Broken Harvest (1995) and Mr Moss in Vanity Fair (2004). He also appeared in single episodes of TV series Lovejoy, Boon, A Touch of Frost, Bachelors Walk and The Royal. O'Brien died at home on 25 February 2009, from cancer, after a 20-month-long illness.