Leo John Genn (9 August 1905 – 26 January 1978) was an English actor and barrister. Signified by his relaxed charm and smooth, "black velvet" voice, he had a lengthy career in theatre, film, television, and radio; often playing aristocratic or gentlemanly, sophisticate roles.
Born to a Jewish family in London, Genn was educated as a lawyer and was a practicing barrister until after World War II, in which he served in the Royal Artillery as a Lieutenant-Colonel. He began his acting career at The Old Vic and made his film debut in 1935, starring in a total of 85 screen roles until his death in 1978. For his portrayal of Petronius in the 1951 Hollywood epic Quo Vadis, he received an Oscar nomination for Best Supporting Actor.
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Dr. Morton Chaney
Henry Wilcox
Sir Hugo Chalmers
Dr. Bellman
Paul Bernard
Gavin Heath
Archbishop of Rheims
General Mandrake
Brig. Gen. Edwin P. Parker Jr.
Petronius
Bel Affris
Starbuck
Gen. Jung-Lu
Captain Edwards
Sir Clifford Chatterley
Narrator
Mr. Eden
Narrator (voice)
Lord Wessex
Prince (uncredited)
Edmond Brighton
Major J. Snow
Elliott
Peter Howard
Rollins (uncredited)
Maida Vale Doctor
Doctor Mark H. Van Kensdelaerik (Dr. "Kik")
The Constable of France
William Bradford
Psychiatrist (uncredited)
Maj. Picquart
Adam Brant
Narrator (voice)
Dr. Lytell
Ralph Hoyt
Michael Morrell
Off-Screen Narrator (uncredited)
Chief of M.I.5
Steve Brunswick
Self - Commentator
Johnny Solo
Danton (uncredited)
Narrator
Roger Halyard
Patrick Hastings, KC
First Brother Grimm
Dr. Norman
Narrator (voice)
Dr. Lanyon
The Judge
Clem Miniver
Robert Sterling
Narrator (uncredited)
Stephen Barlow
Dr. Janusz Korczak
Lanson
Michael Pemberton
Narrator
Prosecuting Counsel (Uncredited)
Narrator (uncredited)
Sgt. Kendall
Paul Bernard
Another Agent
Maj. Gerrard
Prosecuting Counsel
Adm. Quency
Narrator (voice)
William Parry
Joe Anderson (voice)
Husband
Defending Counsel
Man
Marcus Antonius
Narrator (voice)
Lionel Kendall
Rodelec
Self
Murdoch
Dr. Gurdon
Narrator
Commentator