| Father | Schalk van der Merwe b3 (1673 - 1740) |
| Mother | Anna Prevost (1681 - 1740) |
| Sibling | Maria van der Merwe ( - ) |
| Sibling | Elsje van der Merwe (1697 - ) |
| Sibling | Carel van der Merwe (1700 - 1740) |
| Sibling | Willem van der Merwe b2c5 (1701 - ) |
| Sibling | Anna van der Merwe (1704 - ) |
| Sibling | Sophia Prevost (1706 - ) |
| Sibling | Isak van der Merwe (1709 - ) |
| Sibling | Jacobus van der Merwe c4 (1710 - ) |
| Sibling | Marritje van der Merwe (1711 - ) |
| Sibling | Hendrik van der Merwe (1713 - ) |
| Sibling | Gerrit van der Merwe (1715 - ) |
| Sibling | Roelof van der Merwe (1716 - ) |
| Sibling | Petronella van der Merwe (1718 - 1747) |