Zofia Rak was first married to Heinrich Kupperman. The couple had five children, among whom Bertha Kupperman. After her husband died in 1936, Zofia Rak got remarried. Her second husband had four children from a previous marriage.
Addition of a visitor of the website
In addition, a Jokos file (number 30859) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.