Zadok Werkendam was the son of Mozes Izaak Werkendam and Duifje Turfkruijer. He was married to Esther Buijs. The couple had five children, of whom two sons, Max and Nathan, did not survive the war. Two children survived in hiding; one child (already married and with a family of his/her own) surivived the camps.
Addition of a visitor of the website
In addition, a Jokos file (number 25040) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.