1923 - 1978 (55 years)
| Helen Elizabeth van Dyk | |
| B: | 25 Jun 1948 |
| D: | 11 Jul 2011 |
| Johan Daniël van Dyk | |
| B: | 1 Dec 1951 |
| D: | 14 Oct 1988 |
| Vanderbijlpark, Transvaal, Suid-Afrika | |
| Ann Helen du Preez | |
| B: | 16 Jun 1923 |
| D: | Oct 1978 |
| Joseph Daniël van Dyk | |
| B: | 13 Nov 1918 |
| M: | 28 Dec 1946 |
| Johannesburg, Transvaal, Suid-Afrika | |
| D: | 15 Aug 1983 |
| Carletonville, Transvaal, Suid-Afrika | |
