1924 - 1983 (59 years)
| Cornelius Johannes van Dyk | |
| B: | 15 Sep 1951 |
| D: | 21 Jun 2020 |
| Jacobus Gerhardus Johannes van Dyk | |
| B: | 26 Jun 1964 |
| D: | Yes, date unknown |
|
| Susanna Isabella Heymans | |
| B: | 16 Aug 1924 |
| Vrystaat, Suid-Afrika | |
| D: | 14 Dec 1983 |
| Fochville, Transvaal, Suid-Afrika | |
| Sybrand van Dyk | |
| B: | 31 Jan 1917 |
| Transvaal, Suid-Afrika | |
| M: | 12 Jul 1947 |
| Petrus Steyn, Vrystaat, Suid-Afrika | |
| D: | 23 May 1987 |
| Vaalwater, Transvaal, Suid-Afrika | |
