Judith Lam was a daughter of Isaac Hartog Lam and Sara Benedictus Berclouw. They had at least four children. Two of them died young and one of them survived the war. The last child was Henri.
Addition of a visitor of the website
In addition, a Jokos file (number 17160) on this person is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.