 | Sybrand van Dyk (1826-1921) 
|
 | Cornelia Margaretha Nel ( -1920)
|
| Anna Helena Martha van Dyk (1847-1927)  |
| Marthinus Johannes van Dyk (1852-1931) |
| Martha Elizabeth van Dyk (1855- ) |
| Anna Catharina Philippina van Dyk (1856- ) |
| Pieter Willem van Dyk (1861- ) |
| Sybrand Adriaan Cornelis van Dyk (1864-1948) |
| Johanna Margaretha Odendaal van Dyk (1858- )
|
| Izak Matthys Hermanus van der Merwe (1857- ) |
| Maria Susanna van der Merwe (1879- ) |
