Mark Landon, among Michael Landon's nine children, appeared in three movies, including "Us" — a CBS television movie written and directed by his father in 1991 just before he died of cancer at age 54. The film was a pilot intended to be another series for Michael Landon. It aired a few months after his death.
Michael Landon also starred in such shows as "Bonanza" and "Highway to Heaven." He adopted Mark Landon after marrying his mother, Dodie Levy-Fraser, in 1956.
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