He is perhaps best remembered for his role of Big Ed Somers, the power hungry gangster pal of James Cagney in "White Heat" (1949). Born Robert Alexander Cochran in Eureka, California, he was the son of a California lumberjack, who moved the family to Wyoming in the 1920s, where Cochran grew to adulthood. After graduating from the University of Wyoming in 1939, Cochran began working steadily as a Wyoming cowboy, while developing his acting skills working in summer stock and regional theaters and gradually moving on to Broadway. In 1945, he signed with MGM, and for the next several years, played…