- Denis McCallion was born on July 13, 1948 in New York City, New York, USA. Denis is a producer and production manager, known for Hard Time on Planet Earth (1989), Lucan (1977) and The Twilight Zone (1985).
- Parents
- Worked only once with each parent: mother Nora Marlowe on Queen of the Stardust Ballroom (1975) and father James McCallion on The Blue Knight (1975).
- Moved with his parents from New York City in 1952 and stayed with family friends, John McIntire and Jeanette Nolan McIntire, in a Los Angeles suburb until his parents were able to find a place to live.
- Son of character actors James McCallion and Nora Marlowe.
- Brother of Tracey McCallion Campbell.
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