Isaäc Witjas was a son of David Witjas and Roosje Cohen de Lara. He married Gretha Kaas in 1928 and had two children from that marriage. He remarried on 31 December 1940. He had another child from that marriage.
Stadsarchief Amsterdam, archiefkaart Isaäc Witjas
In addition, a Jokos file (number 55717) on this person is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.
Biography