Walter Brennan (July 25, 1894 – September 21, 1974) was an American actor. [1] Brennan won the Academy Award for Best Supporting Actor on three separate occasions, which is currently the record for most Oscar wins by a male actor, tied with Jack Nicholson. Walter Andrew Brennan was born in Lynn, Massachusetts, less than two miles from his family's home in Swampscott, the second of three children born to Irish immigrants William John Brennan and Margaret Elizabeth Flanagan. The elder Brennan was an engineer and inventor, and young Walter studied engineering at Rindge Technical High School in Cambridge, Massachusetts. While in school, Brennan became interested in acting, and began to perform in vaudeville at the age of fifteen. While working as a bank clerk, he enlisted in the U.S. Army and served as a private with the 101st Field Artillery Regiment in France during World War I. Following the war, he moved to Guatemala and raised pineapples, before settling in Los Angeles. During the 1920s, he became involved in the real estate market, where he made a fortune. Unfortunately, he lost most of his money when the market took a sudden downturn due to the Great Depression.