 | Sybrand Johannes van Dyk (1784-1843) 
|
 | Helena Susanna van der Merwe (1785- )
|
| Susanna Zacharia van Dyk (1809- )  |
 | Zacharia Maria van Dyk, i (1811-1817) |
| Helena Johanna Francina van Dyk (1813-1891) |
| Joseph Andries Jacobus van Dyk (1815- ) |
| Zacharia Maria van Dyk, ii (1817-1858) |
| Maria Magdalena Jacoba van Dyk (1819- ) |
| Anna Johanna van Dyk (1822-1861) |
| Marthinus Johannes van Dyk (1807-1879)
|
| Elizabeth Margaretha Magdalena Botha (1831- ) |
