1925 - Yes, date unknown
| Susanna Elisabeth Potgieter | |
| B: | 12 Dec 1949 |
| Zeerust, Transvaal, Suid-Afrika | |
| D: | 31 Dec 1974 |
| Pretoria, Transvaal, Suid-Afrika | |
| Sybrand van Dyk | |
| B: | 7 Nov 1947 |
| M: | 9 Dec 1972 |
| Krugersdorp, Transvaal, Suid-Afrika | |
| D: | 12 Jan 2005 |
| Pretoria, Transvaal, Suid-Afrika | |
| Dietlof Siegfried Mynhardt Potgieter | |
| B: | CA 1925 |
| D: | Yes, date unknown |
| Helena Aletta Sofia Np. | |
| B: | CA 1925 |
| D: | Yes, date unknown |
