Name	Known for
Bosco Hogan Vincent de Courcy O'Regan Vincent de Courcy O'Regan See fewer	The Professor and the Madman (2019)
Fidelma Murphy Agnes Mulqueen Agnes Mulqueen See fewer	Off to Philadelphia in the Morning (1978)
Patrick Bedford Reggie Mulqueen Reggie Mulqueen See fewer	Up the Down Staircase (1967)
Kate Thompson Mary Rose O'Regan Mary Rose O'Regan See fewer	The Price (1985)
Marie Kean Teresa Mulqueen Teresa Mulqueen See fewer	Barry Lyndon (1975)
Arthur O'Sullivan Danny Mulqueen Danny Mulqueen See fewer	Barry Lyndon (1975)
David Byrne Dr. Vincent Curran Dr. Vincent Curran See fewer	Last of Summer (1977)
Ruth Hegarty Nurse Cunningham Nurse Cunningham See fewer	Strumpet City (1980)
Ronnie Walsh Canon Considine Canon Considine See fewer	Insurrection (1966)
Mairin D. O'Sullivan Bessie (as Mairín O'Sullivan) Bessie (as Mairín O'Sullivan) See fewer	Exposure (1978)
John Franklyn Sir Godfrey Bartlett Crowe Sir Godfrey Bartlett Crowe See fewer	The Abominable Dr. Phibes (1971)