Aäron van Gelderen was a butcher at the meat market in Amstelstraat where kosher meat was sold. Jupie and Katie were the names by which Juda and Catharina van Gelderen were known. Sophia’s sister, Clara Cortissos, also lived on Commelinstraat.
Addition of a visitor of the website
In addition, a Jokos file (number 13726) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.