1880 - Yes, date unknown
| Sybrand van Dyk 1948-2005 |
| Sybrand van Dyk | |
| B: | 7 May 1948 |
| D: | 8 Sep 2005 |
| Keimoes, Kaap, Suid-Afrika | |
 | Susanna Johanna Steenkamp 1921-1976 |
| Susanna Johanna Steenkamp | |
| B: | 2 Oct 1921 |
| Heilbron, Vrystaat, Suid-Afrika | |
| D: | 4 Sep 1976 |
| Worcester, Kaap, Suid-Afrika | |
| Johannes Jacobus van Dyk 1919-1988 |
| Johannes Jacobus van Dyk | |
| B: | 13 Dec 1919 |
| Westdene, Transvaal, Suid-Afrika | |
| M: | 12 Jun 1943 |
| Johannesburg, Transvaal, Suid-Afrika | |
| D: | 20 Jan 1988 |
| Christiana, Transvaal, Suid-Afrika | |
| Ockert Johannes Stephanus Steenkamp 1880-Yes, date unknown |
| Ockert Johannes Stephanus Steenkamp | |
| B: | 28 Jul 1880 |
| D: | Yes, date unknown |
| Maria Helena du Preez 1885-Yes, date unknown |
| Maria Helena du Preez | |
| B: | CA 1885 |
| M: | 24 Jan 1911 |
| Heilbron, Vrystaat, Suid-Afrika | |
| D: | Yes, date unknown |
