1889 - 1964 (75 years)
| Margaret Susannah van Dyk 1919-1993 |
| Margaret Susannah van Dyk | |
| B: | 19 Oct 1919 |
| D: | 12 Jan 1993 |
| Pretoria, Transvaal, Suid-Afrika | |
 | Aris Ruyter 1921-2001 |
| Aris Ruyter | |
| B: | 7 Mar 1921 |
| M: | 1 Oct 1948 |
| D: | 5 Dec 2001 |
| Brits, Transvaal, Suid-Afrika | |
| Godfrey Louis van Dyk 1923-1976 |
| Godfrey Louis van Dyk | |
| B: | 27 Aug 1923 |
| D: | 1976 |
| Transvaal, Suid-Afrika | |
| Catherine Jean van Dyk 1955-2002 |
| Catherine Jean van Dyk | |
| B: | 21 Aug 1955 |
| Durban, Natal, Suid-Afrika | |
| D: | 19 Aug 2002 |
| Observatory, Kaap, Suid-Afrika | |
| Dr. James Conrad van Dyk 1927-1967 |
| Dr. James Conrad van Dyk | |
| B: | CA 1927 |
| Pretoria, Transvaal, Suid-Afrika | |
| D: | 28 Apr 1967 |
| Pretoria, Transvaal, Suid-Afrika | |
| Irene Norris Pratt 1926-Yes, date unknown |
| Irene Norris Pratt | |
| B: | 20 Jan 1926 |
| M: | 31 Jan 1953 |
| Johannesburg, Transvaal, Suid-Afrika | |
| D: | Yes, date unknown |
| Ann Jean van Dyk 1930-2021 |
| Ann Jean van Dyk | |
| B: | 2 Jun 1930 |
| D: | 25 Feb 2021 |
| Reginald van Dyk 1934-1982 |
| Reginald van Dyk | |
| B: | 21 Nov 1934 |
| D: | Sep 1982 |
| Judith | |
| M: | 5 Dec 1959 |
| Dr. Catherine Jean Anderson 1889-1964 |
| Dr. Catherine Jean Anderson | |
| B: | 13 Nov 1889 |
| Skotland | |
| D: | 18 Dec 1964 |
| Groenkloof, Pretoria, Suid-Afrika | |
| Dr. Cornelius Godfrey Lodewyk van Dyk 1890-1955 |
| Dr. Cornelius Godfrey Lodewyk van Dyk | |
| B: | 31 Dec 1890 |
| Pretoria, Transvaal, Suid-Afrika | |
| M: | Skotland |
| D: | 16 Aug 1955 |
| Pretoria, Transvaal, Suid-Afrika | |
