1900 - 1978 (78 years)
| Maria Christina van Dyk 1921-Yes, date unknown |
| Maria Christina van Dyk | |
| B: | 2 May 1921 |
| D: | Yes, date unknown |
 | John Andrew Londt 1915-Yes, date unknown |
| John Andrew Londt | |
| B: | 4 Jul 1915 |
| M: | 26 Mar 1940 |
| Bloemfontein, Vrystaat, Suid-Afrika | |
| D: | Yes, date unknown |
| Johanna Dorothea van Dyk 1925-2001 |
| Johanna Dorothea van Dyk | |
| B: | 2 Feb 1925 |
| D: | 24 Nov 2001 |
| Germiston, Transvaal, Suid-Afrika | |
| Rudolf Jacob Francois Groenewald 1922-Yes, date unknown |
| Rudolf Jacob Francois Groenewald | |
| B: | 16 Oct 1922 |
| M: | 1 Mar 1947 |
| D: | Yes, date unknown |
| Alfonso Joseph van Dyk 1936-1987 |
| Alfonso Joseph van Dyk | |
| B: | 13 Feb 1936 |
| D: | 18 Dec 1987 |
| Durban, Natal, Suid-Afrika | |
| Mavis Engela Morgan 1943-Yes, date unknown |
| Mavis Engela Morgan | |
| B: | 26 Feb 1943 |
| M: | 30 Jul 1965 |
| D: | Yes, date unknown |
| Olga Frankot 1936-1976 |
| Olga Frankot | |
| B: | 5 May 1936 |
| Assen, Drenthe, Netherlands | |
| D: | 7 Sep 1976 |
| Observatory, Kaap, Suid-Afrika | |
| Magdalena Catharina Opperman 1900-1978 |
| Magdalena Catharina Opperman | |
| B: | 22 Jan 1900 |
| D: | Mar 1978 |
| Willem Johannes Stephanus van Dyk 1882-1939 |
| Willem Johannes Stephanus van Dyk | |
| B: | 21 Jun 1882 |
| M: | 5 May 1919 |
| D: | CA 1939 |
