Joseph Gradenwitz and Erna Schoenenberg were married at Westerbork transit camp on 16 October 1942. He was a manservant and a son of rabbi Hirsh Gradenwitz and Rosa Bondi. She was a daughter of Julius Schoenenberg (deceased) and Selma Rosenthal.
Record of marriage certificates of the Westerbork Municipality, currently at the archives of Gemeente Midden-Drenthe in Beilen
Biography