Mozes Meijer Cohen and Adele Hertog married in 1909 in Meerssen. They had three children: a child that survived, Olga and Alfred (who died in 1937).
Stadsarchief Amsterdam, archiefkaart Mozes Meijer Cohen
In addition, a Jokos file (number 16744) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.
This family is commemorated on a memorial in Assen. More information on this memorial can be found (in Dutch) on the website of the Nationaal Comité 4 en 5 mei.