Joseph de Rooij, a butcher by trade, was a son of Mozes de Rooij and Elizabeth Moscoviter. On 10 February1937 he married in Rotterdam Leentje Boeki, a daugther of Azor Boeki and Hendrika Kulman. In 1942, the couple had a son Mozes Henny.
Joseph de Rooij lived with his wife Leentje Boeki in April 1940 at Kruisstraat 61b in Rotterdam but on 22 November 1940 Joseph and his wife moved to the Nenijto-g…