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…
In addition, a Jokos file (number 52052) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.
Hartog van Geldere was deported to Sobibor in June 1943 from Vught via Westerbork on the so-called children's transport. He was 7 when he died.
J. de Moei, Joodse kinderen in het kamp Vught (Vught 1999) 33