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 th…