This person is commemorated on a memorial in Hoogeveen. More information on this memorial can be found (in Dutch) on the website of the Nationaal Comité 4 en 5 mei.
Izaak Benedictus Kolthoff and Martha Kolthoff had one child. This child was married and lived at a different address. She and her family survived the war.
Addition of a visitor of the website
In addition, a Jokos file (number 9408) on this household is at the Amsterdam Municipal Archive. Access i…