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.
Where to watch Walter Brennan’s work in 
United States
Top 30 by popularity. Click any title to see exactly which OTT carries it in United States.
The Merv Griffin Show
1962
The Oscars
1953
Dick Powell's Zane Grey Theatre
1956
What's My Line?
1950
The Real McCoys
1957
This Is Your Life
1952
The Ford Television Theatre
1952
Cavalcade of America
1952
The Guns of Will Sonnett
1967
The Dinah Shore Chevy Show
1956
The Glen Campbell Goodtime Hour
1969
Rio Bravo
1959
Red River
1948
How the West Was Won
1962
To Rome with Love
1969
My Darling Clementine
1946
Sergeant York
1941
Bad Day at Black Rock
1955
To Have and Have Not
1945
Support Your Local Sheriff!
1969
Schlitz Playhouse of Stars
1951
The Gnome-Mobile
1967
Meet John Doe
1941
The One and Only, Genuine, Original Family Band
1968
The Far Country
1954
The Oscar
1966
Along the Great Divide
1951
Blood on the Moon
1948
The North Star
1943
Tammy and the Bachelor
1957