John Castle

John Castle (born 14 January 1940) is an English actor. Castle has acted in theatre, film and television. He is well known for his role as Postumus in the 1976 BBC television adaptation of I, Claudius and for playing Geoffrey in the 1968 film, The Lion in Winter. He also played Dr. Carrasco as well as the prisoner called The Duke in the film Man of La Mancha. Description above from the Wikipedia article John Castle, licensed under CC-BY-SA, full list of contributors on Wikipedia.
Cast

Blow-Up
Bill

Animated Epics: Beowulf
Hygelac ( voice )

RoboCop 3
McDaggett

Realm of Darkness - The Elusive Depths of Mexico
Narrator

Sparrow
Giuseppe

The Lion in Winter
Geoffrey

Dealers
Frank Mallory

Eagle's Wing
The Priest

The Heart Surgeon
Charlie Hawkesmore

The Tractate Middoth
John Eldred

Antony and Cleopatra
Octavius Caesar

The Adventures of Eliza Fraser
Captain Rory McBride

Never Never Land
Jim

My Killer Reunion
Ethan

Man of La Mancha
Sanson Carrasco / The Duke

Made
Father Dyson

If There Weren't Any Blacks You'd Have to Invent Them
Unknown

Seasick
Chief Engineer Josif Mantz

King David
Abner

A Harlot's Progress
Sir John Gonson

Hornblower: Retribution
Captain Collins

The Cater Street Hangman
Rev. Prebble
The Promise
Unknown
Trafalgar Battle Surgeon
Gunner Rivers
The Wings of the Dove
Merton
The Three Hostages
Dominick Medina

Stalked by My Amish Boyfriend
Grant

Gods and Generals
Old Penn

Judo Champ
Mr Hall

Kim
Narrator (voice)

The Crucifer of Blood
Neville St. Claire

Miss Marple: The Mirror Crack'd from Side to Side
Detective Inspector Craddock

The Life and Death of King John
Earl of Salisbury

The Incredible Sarah
Damala

A Night Out
Seeley
Heather Ann
Petty Officer
Princes in the Tower
Dr. John Argentine

What Hides in Silence
Craig

No One Believed Me
Dan Ingre