Mozes van Thijn was a son of Benjamin van Thijn and Rebecca de Rooij, from whom his father has been divorced in 1926. City Archive of Amsterdam, archive card of Benjamin van Thijn and Rebecca de Rooij.
In addition, a Jokos file (number 13554) 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 11886/3428).