Willem Koster married in 1919 in The Hague.
Addition of a visitor of the website
In addition, Jokos files (numbers 17208, 17211) on this family or other family members are at the Amsterdam Municipal Archive. Access is subject to authorization from the Stichting Joods Maatschappelijk Werk.The Jokos files reveal that a claim was lodged for compensation for :
- looted jewellery (S-claim, number 13/115 vervalt 29-12-1959)
- valuables surrendered to the Lippmann-Rosenthal looting bank (L-claim, number 6729/7496)
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