Berthold Joël van Geldere was a son from the first wedlock of Hartog van Geldere and Jettchen Goldberg. Berthold was born on 9 June 1898 in Den Haag. He married on 9 January 1929 in Rotterdam Sientje Elizabeth Bosman, who was born there on 6 July 1897 as a daughter of Isaac Bosman and Engeltje Polak. The couple had four children, of whom the first born was a stillborn son. Their 2nd child was Enge…