1882 -
| Westenborg, Jan Arend 1904- |
| Westenborg, Jan Arend | |
| B: | 1904 |
| Amsterdam, Nederland | |
 | Koolhaas, Aafje Abt 1905- |
| Koolhaas, Aafje | |
| B: | Abt 1905 |
| Amsterdam | |
| M: | 11 August 1926 |
| Amsterdam, Netherlands | |
| Westenborg, Catharina Maria Abt 1914-1918 |
| Westenborg, Catharina Maria | |
| B: | Abt 1914 |
| Watergraafsmeer | |
| D: | 8 Mei 1918 |
| Watergraafsmeer | |
| Westenborg, Gerrit Cornelis | |
| B: | 24 Jul 1882 |
| Amsterdam | |
| Van Duin, Everdina Johanna | |
| B: | 21 Feb 1881 |
| Amsterdam, Noord-Holland, Netherlands | |
| M: | 14 October 1903 |
| Amsterdam, Netherlands | |
