Constant Johan van der Sijp (1887- ) 
|
Nina Marie Ettij (1892- ) |
Josephine Anna Nina van der Sijp (1914- )  |
| Constance Jane van der Sijp (1916-2007) |
 | Prof.dr Hendricus Jacobus Marie Weve (1888-1962) |
| Regina Hermina Maria Terwindt (1889-1971)
|
| Mr Johannes Jacobus Weve (1918-1992) |
| Marcellus Antonius Marie Weve (1920-1986) |
| Henricus Johannes Marie Weve (1921- ) |
 | Béatrice Mathilda Maria Weve (1922-2012)
|
| Jaap Willem Charles Marie van der Sijp (1920-2005)
|
