Born 1899, Pat along with his school friend Spencer Tracy attended Marquette Academy, a Catholic Secondary School. Both of them enlisted in the Navy at the start of World War II, but neither saw action. Both moved to New York City, shared an apartment and auditioned for shows.…more
O'Brien has two Stars on the Walk Of Fame. One is for Television and the other for Motion Pictures.
O'Brien attended Marquette Academy.
Pat opposed what he believed to be Communist infiltration of the major studios and, while he was never very vocal about his views, he suggested that those views may have been responsible for his blacklisting.