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.
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In addition, a Jokos file (number 9408) on this household 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 6596 / 20203).
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