Catharina Zwartverwer was a daughter of Emanuel Zwartverwer and Reichl Strus. She married in Amsterdam on 21 July 1937 to Icyk Ber Fuks from Czestochowa.
Four brothers, who have been killed also during the Holocaust were Samuel, Abram Sija who lived in Apeldoorn and the still at home living Raphael …
In addition, a Jokos file (number 55296) on this family is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.