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Jon Provost is best remembered for playing Timmy, the orphan boy who befriended Lassie the collie during the third season (1957) of the Lassie television series. He remained with the show through 1964 when Timmy and his adopted family, the Martins, moved to Australia, leaving their faithful collie in the care of another. Provost also appeared in a few feature films, making his debut in The Country Girl (1954). He also appeared in a couple of films while working on the series. After leaving the show, Provost appeared in a couple more films but left the industry in 1970 and eventually got involved in real estate. He did, however, make a guest appearance on the new Lassie television series in 1989.