Christopher, a writer and the son of Oscar-winning blacklisted Hollywood screenwriter Dalton Trumbo, died January 8, 2011, at his home in Ojai, California. He was 70.

According to news reports, the cause was kidney cancer.

Trumbo was an expert on the 1940s House Un-American Activities Committee investigation into alleged communist infiltration of Hollywood, a subject he knew about in detail through his father, who refused to cooperate with the committee and was imprisoned as a member of the blacklisted Hollywood 10. Christopher Trumbo wrote the play, Trumbo: Red, White and Blacklisted about his father, whose film credits included Exodus and The Brave One.

A graduate of Columbia University, Christopher Trumbo, who wrote the screenplays for such movies as The Don Is Dead and Brannigan.

His television credits included such series as Ironside, Quincy, M.E. and Falcon Crest.

He was survived by his wife and two sisters.