David Mozes de Jong, born 9 September 1890 in Rotterdam, was a son of Abraham de Jong and Esther de Koning. He married in Rotterdam on 29 November 1922 the non-Jewish 24-year old Johanna Wilhelmina Coomans from Gouda, a daughter of Arnoldus Coomans and Aartje Verweij. Already on 15 March 1922 their first child was born, a son named Abraham, who was legalized during the wedding ceremony of his pare…