Walter Brennan
Walter Andrew Brennan (July 25, 1894 – September 21, 1974) was an American actor and singer. He won the Academy Award for Best Supporting Actor for his performances in Come and Get It (1936), Kentucky (1938), and The Westerner (1940), making him one of only three male actors to win three Academy Awards. Brennan was also nominated for his performance in Sergeant York (1941). Other noteworthy performances were in To Have and Have Not (1944), My Darling Clementine (1946), Red River (1948), and Rio Bravo (1959). Description above from the Wikipedia article Walter Brennan, licensed under CC-BY-SA, full list of contributors on Wikipedia.
Filmography
Dick Powell's Zane Grey Theatre
The Merv Griffin Show
What's My Line?
The Oscars
The Ford Television Theatre
The Dinah Shore Chevy Show
Alias Smith and Jones
The Real McCoys
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Lux Video Theatre
The Guns of Will Sonnett
This Is Your Life
Cavalcade of America
The Glen Campbell Goodtime Hour
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The George Gobel Show
To Rome with Love
Rio Bravo
Schlitz Playhouse of Stars
Bride of Frankenstein
How the West Was Won
Red River
The Invisible Man
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The Ford Show
Riptide
Best of the Badmen
My Darling Clementine
Driftwood
Bad Day at Black Rock
My Woman
Fury
The Day They Hanged Kid Curry