Margrietha Robbe (1861- ) 
|
Margrieta Hekkers (1891- )  |
| Wilhelmina Johanna Hekkers (1897- ) |
| Johanna Jacobina Hekkers (1899- ) |
| Maria Alida Hekkers (1901- ) |
| Christina Anna Adriana Hekkers (1885-1970)
|
Wietze Klaas Sikke Visser ( -1810) |
| Frederikus Philippus Visser (1908-1983) |
| Christiaan Wilhelm Visser ( -1910) |
| Wilhelmus Johannes Marinus Visser (1911-1987) |
| Klaas Christiaan Visser (1912-1969) |
| Margaretha Frederika Visser (1915-1966) |
| Christina Anna Adriana Visser ( -1918) |
