` ` Bonanza '' star 's son Mark Landon found dead in his own home . Police found no indication of foul play in 60-year - old 's death . The son of actor Michael Landon was found dead in his West Hollywood , California , home Monday afternoon , according to investigators . Mark Landon had a few acting credits , playing small parts in several films .
` ` Bonanza '' star 's son Mark Landon found dead in his own home . Police found no indication of foul play in 60-year - old 's death . Mark Landon had a few acting credits , playing small parts in several films .