- Born
- Died
- Birth nameWilhelmus Jacobus Duyn
- Nickname
- Big Mouth
- Willem Duyn was born on March 31, 1937 in Haarlem, Noord-Holland, Netherlands. He was an actor, known for The Wonder Years (1988), Eurovision Song Contest 1974 (1974) and Pompy de Robodoll (1987). He was married to Ingrid Kup. He died on December 3, 2004 in near Almelo, Netherlands.
- Spouse
- Member of the Dutch rock band Mouth and MacNeal, which had a hit in 1972 with "How Do You Do".
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