Andy Brennan was born on July 21, 1923 in Los Angeles, California, USA as Walter Andrew Brennan Jr. In the career stretching nearly 5 … Walter Andrew Brennan (July 25, 1894 – September 21, 1974) was an American actor and singer. Walter Andrew Brennan (July 25, 1894 – September 21, 1974) was an American acto r who won the Academy Award for Best Supporting Actor in 1936, 1938, and 1940, making him one of only three male actors to win three Academy Awards. As a boy, he studied engineering at Rindge Technical High School in Cambridge, MA, but fell in love with acting after appearing in several school plays. He is known for his performances in Sergeant York (1941), To Have and Have Not (1944), My Darling Clementine (1946), Red River (1948), Rio Bravo (1959), and How the West Was Won (1962). He is a producer and actor, known for The Guns of Will Sonnett (1967), Shootout at Big Sag (1962) and The Real McCoys (1957). He was the only performer to win three Academy Awards for best supporting actor. He is the only actor to win 3 ‘Academy Awards’ for ‘Best Supporting Actor.’ He was best known for his portrayals of Western sidekicks and affable or grumpy old guy. Brennan was born in Lynn, Massachusetts, less than two miles from his family’s home in Swampscott, Massachusetts Andy Brennan was born on July 21, 1923 in Los Angeles, California, USA as Walter Andrew Brennan Jr. He is a producer and actor, known for The Guns of Will Sonnett (1967), Shootout at Big Sag (1962) and The Real McCoys (1957). Walter Andrew Brennan was a well-known American actor. Walter Brennan, (born July 25, 1894, Lynn, Massachusetts, U.S.—died September 21, 1974, Oxnard, California), American character actor, best known for his portrayals of western sidekicks and lovable or irascible old codgers. Born July 25, 1894 in Lynn, MA, Walter Andrew Brennan was the second of three children by engineer William John Brennan and his wife, Margaret. Walter Brennan full list of movies and tv shows in theaters, in production and upcoming films.