Mozes van der Veen and Saartje Bont married in 1899 in Amsterdam. They had seven children, among whom Jacob.
Stadsarchief Amsterdam, archiefkaart Mozes van der Veen
In addition, a Jokos file (number 14458) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.