William Koch de Gooreynd Belgian stockbroker (1853–1919) Parents Josephine Emile de Laska Franciscus Josephus Koch Children Peter Maurice Jacques Koch de Gooreynd Alexander Louis Wynand Koch de Gooreynd Gerald Koch de Gooreynd Siblings Louise Koch Marie Victoire Augustine Koch Francis Vincent Alexandre Koch Stephanie Marie Antoinette Koch Alexandre Jacques François Joseph Koch Partners Manuela Joanna Joaquina Maria de Laski