Thorbjörn Fälldin
He was the Prime Minister of Sweden in three times, but in different terms. First was from 1976 to 1982, and leader of the Swedish Centre Party from 1971 to 1985.  On his first appointment in 1976, he was the first non-Social Democrat Prime Minister for forty years and the first since the 1930s not to have worked as a professional politician since his teens.