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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Known For
Moby Dick
(1956)
Starbuck
Quo Vadis
(1951)
Petronius
The Longest Day
(1962)
Brig. Gen. Edwin P. Parker Jr.
Khartoum
(1966)
Narrator (voice)
55 Days at Peking
(1963)
Gen. Jung-Lu
The Snake Pit
(1948)
Doctor Mark H. Van Kensdelaerik (Dr. "Kik")
Pygmalion
(1939)
Prince (uncredited)
A Lizard in a Woman's Skin
(1971)
Edmond Brighton
The MacKintosh Man
(1973)
Rollins (uncredited)
Plymouth Adventure
(1952)
William Bradford
Ten Little Indians
(1965)
General Mandrake
Endless Night
(1972)
Psychiatrist (uncredited)
Henry V
(1944)
The Constable of France
Caesar and Cleopatra
(1945)
Bel Affris
The Strange Case of Dr. Jekyll and Mr. Hyde
(1968)
Dr. Lanyon
Full Filmography
Acting
Accused
(1936)
Man
The Dream Doctor
(1936)
Husband
The Rat
(1937)
Defending Counsel
When Thief Meets Thief
(1937)
Prosecuting Counsel
Kate Plus Ten
(1938)
Dr. Gurdon
Pygmalion
(1939)
Prince (uncredited)
Ten Days in Paris
(1940)
Lanson
Girl in the News
(1940)
Prosecuting Counsel (Uncredited)
Contraband
(1940)
First Brother Grimm
French Communique
(1940)
Commentator
The Young Mr. Pitt
(1942)
Danton (uncredited)
The Bells Go Down
(1943)
Off-Screen Narrator (uncredited)
The Way Ahead
(1944)
Captain Edwards
Tunisian Victory
(1944)
Narrator (voice)
Attack: The Battle for New Britain
(1944)
Narrator (voice)
Henry V
(1944)
The Constable of France
The Return of the Vikings
(1944)
Narrator (voice)
Caesar and Cleopatra
(1945)
Bel Affris
Famous Scenes from Shakespeare No. I: Julius Caesar - The Forum Scene - Act III. Scene 2
(1945)
Marcus Antonius
Green for Danger
(1946)
Mr. Eden
Theirs Is the Glory
(1946)
Narrator (uncredited)
Mourning Becomes Electra
(1947)
Adam Brant
The Velvet Touch
(1948)
Michael Morrell
The Snake Pit
(1948)
Doctor Mark H. Van Kensdelaerik (Dr. "Kik")
London Belongs to Me
(1948)
Narrator (uncredited)
The Wooden Horse
(1950)
Peter Howard
The Miniver Story
(1950)
Steve Brunswick
The Undefeated
(1950)
Joe Anderson (voice)
No Place for Jennifer
(1950)
William Parry
I Went Back
(1950)
Narrator
Quo Vadis
(1951)
Petronius
The Magic Box
(1952)
Maida Vale Doctor
Plymouth Adventure
(1952)
William Bradford
24 Hours of a Woman's Life
(1952)
Robert Sterling
The Red Beret
(1953)
Major J. Snow
Personal Affair
(1953)
Stephen Barlow
The Girls of Pleasure Island
(1953)
Roger Halyard
Elizabeth Is Queen
(1953)
Narrator
The Green Scarf
(1954)
Rodelec
Lady Chatterley's Lover
(1955)
Sir Clifford Chatterley
Blackmail
(1955)
Lionel Kendall
Moby Dick
(1956)
Starbuck
Beyond Mombasa
(1956)
Ralph Hoyt
The Steel Bayonet
(1958)
Maj. Gerrard
I Accuse!
(1958)
Maj. Picquart
Tank Force!
(1958)
Sgt. Kendall
The Immortal Land
(1958)
Escape by Night
(1960)
Michael Pemberton
Too Hot to Handle
(1960)
Johnny Solo
Mrs. Miniver
(1960)
Clem Miniver
Life of Adolf Hitler
(1961)
Narrator
The Longest Day
(1962)
Brig. Gen. Edwin P. Parker Jr.
55 Days at Peking
(1963)
Gen. Jung-Lu
The Delhi Way
(1964)
Narrator (voice)
The Death Ray of Dr. Mabuse
(1964)
Adm. Quency
Ten Little Indians
(1965)
General Mandrake
Circus of Fear
(1966)
Elliott
Khartoum
(1966)
Narrator (voice)
The Strange Case of Dr. Jekyll and Mr. Hyde
(1968)
Dr. Lanyon
The Bloody Judge
(1970)
Lord Wessex
Connecting Rooms
(1970)
Dr. Norman
Die Screaming Marianne
(1971)
The Judge
A Lizard in a Woman's Skin
(1971)
Edmond Brighton
Endless Night
(1972)
Psychiatrist (uncredited)
The Silent One
(1973)
Chief of M.I.5
The MacKintosh Man
(1973)
Rollins (uncredited)
Frightmare
(1974)
Dr. Lytell
You Are Free, Dr. Korczak
(1975)
Dr. Janusz Korczak