Louis van der Ham and Hendrijntje van Leeuwen were the parents of Sara van der Ham.
Addition of a visitor of the website
In addition, a Jokos file (number 13665) 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 bank (L-claim, number 4677 / 10757).