Alphonse Gabriel "Al" Capone, who was locked up in Cell #181 on Alcatraz Island, was a notorious American gangster who ran the Chicago Outfit during Prohibition. Capone was born in Brooklyn, New York, in 1899. He began his career as a member of different street gangs in New York City. In 1919, he moved to Chicago and joined the criminal underworld there. He moved up quickly in the Outfit and took over as its leader in the early 1920s.