Question: When did Florentine Rost Van Tonningen's husband die?
Answer: 6 June 1945

Meinoud Marinus Rost van Tonningen (19 February 1894 – 6 June 1945) was a Dutch politician of the National Socialist Movement (NSB). During the German occupation of the Netherlands in World War II, he collaborated extensively with the German occupation forces. He was the husband of Florentine Rost van Tonnigen