Willy Maertens was born on October 30, 1893 in Brunswick, Germany as Wilhelm Hermann August Maertens. He was an actor, known for Biedermann und die Brandstifter (1958), Unseliger Sommer (1961) and Der Trauschein (1967). He was married to Charlotte Kramm. He died on November 28, 1967 in Hamburg, West Germany.