Isaäc Blitz and Theodora Witstein had one child that survived the war.
Addition of a visitor of the website
In addition, a Jokos file (number 53190) on this household is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.The Jokos file reveals that a claim was lodged for compensation for valuables surrendered to the Lippmann-Rosenthal looting bank (L-claim, number 1004/10627).