Gustave Schaap married for the first time in 1935 in Amsterdam. This marriage was dissolved in 1939. He had one child from this marriage. He married Rosa Catharina van der Heijden on 9 April 1941.
Stadsarchief Amsterdam, archiefkaart Gustave Schaap
In addition, a Jokos file (number 34796) on this family 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 …