1911 - 1987 (76 years)
| Pieter Johannes Redelinghuys van Dyk 1946-1992 |
| Pieter Johannes Redelinghuys van Dyk | |
| B: | 1 Mar 1946 |
| D: | 5 Sep 1992 |
| Observatory, Kaap, Suid-Afrika | |
| Jacques van Dyk 1986-2017 |
| Jacques van Dyk | |
| B: | 9 Oct 1986 |
| D: | 10 May 2017 |
| Wellington, Kaap, Suid-Afrika | |
 | Sunita Marais 1986-2017 |
| Sunita Marais | |
| B: | 16 Jan 1986 |
| M: | 19 May 2012 |
| D: | 10 May 2017 |
| Wellington, Kaap, Suid-Afrika | |
|
| Wilhelm Lubbe van Dyk 1911-1987 |
| Wilhelm Lubbe van Dyk | |
| B: | 2 Jul 1911 |
| Ceres, Kaap, Suid-Afrika | |
| D: | 4 Aug 1987 |
| Paarl, Kaap, Suid-Afrika | |
| Helena Esbella Martha Elizabeth Oosthuizen | |
| B: | 26 Mar 1916 |
| Ladismith, Kaap, Suid-Afrika | |
| M: | 13 Dec 1941 |
| Paarl, Kaap, Suid-Afrika | |
| D: | 3 Apr 2002 |
| Paarl, Kaap, Suid-Afrika | |
