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Michael Landon
Michael Landon (born Eugene Maurice Orowitz; October 31, 1936 – July 1, 1991) was an American actor and filmmaker. He is known for his roles as Little Joe Cartwright in Bonanza (1959–1973), Charles Ingalls in Little House on the Prairie (1974–1983), and Jonathan Smith in Highway to Heaven (1984–1989). Landon appeared on the cover of TV Guide 22 times, second only to Lucille Ball.
Source: Wikipedia