Meyer de Wolf and Betje Fresco had seven children. Four of them survived the war. A daughter died before the war. The other children were Hartog and Sara. Meyer was a casual worker. Betje sold fish.
H.E. Dominicus, Mauthausen. Een gedenkboek (2e herziene en uitgebreide druk; Amsterdam 1999) 172
In addition, a Jokos file (number 20781) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.