Screenwriter of acclaimed films, including Mildred Pierce, June Bride, The Unsuspected, and 1954's The Naked Jungle. He also once worked as the President of the Writer's Guild.
Frequent strikes by his father's union forced young Ranald to take a job and help support his family.
He was President of the Writers' Guild of America in the early 1970s.
He had a son with his second wife
His first job in showbusiness was as a page at the Rockefeller Center alongside another young page named Gregory Peck.