My grandmother's name was CorneliaJohanna de Haas. Her married name was van den Bosch. Oma had two sisters. One named Jacoba (tante Coba) and another named tante Judith. She may have had another sister named Sonja, but I'm not aware of that. I can check with my aunt who is the last surviving child of Cornelia Johanna van den Bosch (nee de Haas). One thing i am sure of is that my grandmother had a brother Max (oom Max) , who lived in the States, because he came to visit us when we first immigrated to Canada in 1954.