Mozes van der Sluis and Grietje Roos were married in Westerbork transit camp on 26 February 1943. He had been married before to Betje Roos; this marriage ended in divorce. Mozes, an export butcher, was a son of export butcher Salomon van der Sluis and the deceased Eva Roos. Grietje Roos, a bookkeeper, was a daughter of Abraham Roos and Sara Frank, both deceased. At the marriage ceremony Mozes van …