Marie Polak was the daughter of Joseph Polak and Lena Woudhuijsen.
Stadsarchief Amsterdam, gezinskaart Joseph Polak
A copy remains of the ketubah of Erich van Gelder and Marie Polak. They had their huppa in Apeldoorn on 8 September 1942.
Municipal archive Apeldoorn, Records Nederlands Israëlitische Gemeente Apeldoorn