Joël Stouwer was married to Naatje Vischjager. They had three children. Joël Stouwer was a diamond trader. He had bought a few items of jewellery to take with him on his escape from the Netherlands. Together with one child, Joël and Naatje reached Brussels, where they hid the jewellery with a family Joël knew well. They were betrayed by two women, Wijnschenk and Zilverberg, who were working for the Nazis. In September 1943, those women gave them up to Kaptein, a member of the SD who specialised in catching Jews who had fled the Netherlands.
Kaptein promised that he would release Joël, Naatje and their child in return for the jewellery. Joël took Kaptein to the address of the close family friend and gave Kaptein the jewellery. When Kaptein had the items of jewellery in his possession, he organised for Joël, Naatje and their child to be deported via Mechelen. Two children survived the war. The family friend also survived the war and made a statement.
The archive of the Stichting Sieraden-Comité contains among other things a list of the stolen items of jewellery, a declaration made under oath and a statement of the right to inheritance from 1959.
NIOD, Records Stichting Sieraden-Comité, box 7HF, file 98
We have been unable to determine whether one or more members of this family survived the war. While their names do not appear on the lists of survivors, we have not been able to trace them in In Memoriam either. They are therefore labeled as 'surviving' and their names are not listed.
In addition, a Jokos file (number 5509) 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 11609/7244).