Meijer de Leeuw was a son of Moses de Leeuw and Beletje van Tijn. He was born on 1 April 1879 in Den Helder. He married the Roman Catholic Wilhelmina van de Graaf on 27 February 1908 in Amsterdam, who was born there on 27 February 1886, as a daughter of Cornelis van de Graaf and Engelina Johanna Maal. Meijer's wife however died shortly after the end of the war in Amsterdam on 23 July 1945. As far …