Name	Known for
Kathleen Beller Maureen O'Brian (credit only) Maureen O'Brian (credit only) See fewer	The Godfather Part II (1974)
Pierce Brosnan Rory O'Manion Rory O'Manion See fewer	Mamma Mia! (2008)
Steve Forrest James Kent (credit only) James Kent (credit only) See fewer	Mommie Dearest (1981)
Peter Gilmore Jim O'Brien Jim O'Brien See fewer	Carry on Up the Khyber (1968)
Nicholas Hammond Padric O'Manion Padric O'Manion See fewer	The Sound of Music (1965)
Simon MacCorkindale David Clement David Clement See fewer	Jaws 3-D (1983)
Kate Mulgrew Rachel Clement Rachel Clement See fewer	Star Trek: Voyager (1995)
Barbara Parkins Charlotte Kent (credit only) Charlotte Kent (credit only) See fewer	Valley of the Dolls (1967)
Linda Purl Deirdre O'Manion Deirdre O'Manion See fewer	Mighty Joe Young (1998)
Anthony Quayle Lord Montgomery Lord Montgomery See fewer	Lawrence of Arabia (1962)
Simon Rouse Eamon Eamon See fewer	The Bill (1984)
David Soul Caleb Staunton (credit only) Caleb Staunton (credit only) See fewer	Starsky & Hutch (2004)
Julian Curry Colonel Maitland Colonel Maitland See fewer	Sky Captain and the World of Tomorrow (2004)
T.P. McKenna Harry Clement Harry Clement See fewer	Ulysses (1967)
Harry Towb O'Connor O'Connor See fewer	The Blue Max (1966)
James Coyle Houlihan Houlihan See fewer	Brazil (1985)
Jim Culleton Brian O'Manion Brian O'Manion See fewer	The Manions of America (1981)
Gerard Mannix Flynn Doyle (as Mannix Flynn) Doyle (as Mannix Flynn) See fewer	Excalibur (1981)
Julie Hamilton Mrs. Dougherty Mrs. Dougherty See fewer	Rawhead Rex (1986)
Aaron Harris Noonan Noonan See fewer	Bad Choices (2014)
Tom Hickey Kerrigan Kerrigan See fewer	Possession (2002)
David Jackson Trooper Craig Trooper Craig See fewer	Blake's 7 (1978)
Deirdre Lawless Mollie Mollie See fewer	The Irish R.M. (1983)
Derek Lord Agent Hume Agent Hume See fewer	Take the High Road (1980)
Ena May Moira Moira See fewer	Snakes and Ladders (1996)
Padraic Mullholland Young Irelander Young Irelander See fewer	The Manions of America (1981)
Johnny Murphy Dr. Fleming (as John Murphy) Dr. Fleming (as John Murphy) See fewer	The Commitments (1991)
Henry Conyngham Leftenant (as The Earl of Mount Charles) Leftenant (as The Earl of Mount Charles) See fewer	The Manions of America (1981)
Paul Markey Tin whistle lad (uncredited) Tin whistle lad (uncredited) See fewer	Versus Vampire
Liam O'Callaghan Liam (uncredited) Liam (uncredited) See fewer	Excalibur (1981)