David Kalkoene and Betje Aandagt married in 1902. They had at least nine children. Four of them, Abraham, Aaltje, Sophia and Roosje lived on another address.
Addition of a visitor of the website
In addition, a Jokos file (number 53205) on this family 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 6059 / 6062).