Wayne is right that there were three more children, Mina, Maurits and Clara. However, Mina did not survive the war. She died in Auschwitz from typhus. Mina's daughter Ineke did survive, and lived with her father.
Maurits remarried to Lena Biesen and had one son, Salomon.
Clara and her husband Juda Hamerslag (my grandparents) emigrated to the United States with their two daughters, Esther and Rebecca.