Fijtje Posener was a daughter of Betje Posener. Fijtje married in Amsterdam on 6 August 1890 to Zacharias Walvis, who passed away there on 14 February 1925. The couple had ten children, of whom four sons have already died as babies. The other children were Levie, Hartog, Betje, Judic, Heintje and …
In addition, a Jokos file (number 3461) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.