Name	Known for
Dennis Burgess Sir William Crawley Sir William Crawley See fewer	The Elephant Man (1980)
Donna Edwards Myfanwy Llewellyn Myfanwy Llewellyn See fewer	Belonging (2000)
Dafydd Hywel Henry Parry Henry Parry See fewer	Miss Peregrine's Home for Peculiar Children (2016)
Gerald James Mr. Thomas (Ieuan Ddu) Mr. Thomas (Ieuan Ddu) See fewer	The Man with the Golden Gun (1974)
Delme Bryn Jones Dick Llewellyn Dick Llewellyn See fewer	Off to Philadelphia in the Morning (1978)
Gaynor Morgan Rees Anne Parry Anne Parry See fewer	Off to Philadelphia in the Morning (1978)
Dewi Morris Robbie Jones Robbie Jones See fewer	Grand Slam (1978)
Fidelma Murphy Cathy Llewellyn Cathy Llewellyn See fewer	Off to Philadelphia in the Morning (1978)
Stevie Parry Official Official See fewer	Very Annie Mary (2001)
Gareth Ridgewell Whiley Joseph Parry Joseph Parry See fewer	Off to Philadelphia in the Morning (1978)
William Squire Daniel Parry Daniel Parry See fewer	The Lord of the Rings (1978)
Rachel Thomas Betty Parry Betty Parry See fewer	The Woman Who Wouldn't Die (1965)
Jack Walters Ben Walkins Ben Walkins See fewer	The Englishman Who Went Up a Hill But Came Down a Mountain (1995)