Menachem Asscher was a son of Abraham Asscher. He married Keetje Cohen on 16 April 1942.
Stadsarchief Amsterdam, archiefkaart Menachem Asser
Menachem Asscher moved to Amsterdam for his piano studies. See for more information: C. Asscher-Pinkhof, Danseres zonder benen (several editions)
In addition, a Jokos file (number 54573) on this person 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 3).