Gertrud Käthe Levy was born in 1906 in Hildesheim as daughter of Emil Levy and Mathilde Kahn. She was widow of Friedrich Wilhelm Apel when she married on 2 December 1936 in Delft to Nathan Levie Boas, a son of Simon Boas and Mietje Katan. The marriage however ended in a divorce by verdict of the District Court of Den Haag from 30 January 1940 and registered in the Civil Registry of Delft on 16 May…