Naatje van Weren was a daughter of Salomon van Weren and Rebecca Halverstad. She married Jacob Schrijver in Amsterdam on 17 Juli 1913. website www.wiewaswie.nl.
In addition, a Jokos file (number 52605) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.