Jonas Efraim Cauveren was the widower of Betje -Betsy- van Kollem, who passed away in 1938. They had two children.
Addition of a visitor of the website.
In addition, a Jokos file (number 53945) on this person is at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.The Jokos file reveals that a claim was lodged for compensation for valuables surrendered to the Lippmann-Rosenthal looting bank (L-claim, number 1735 / 5088).
This person is commemorated on a memorial in Doetinchem. More information on this memorial can be found (in Dutch) on the website of the Nationaal Comité 4 en 5 mei.
Biography