1880 - Yes, date unknown
| Nicolaas Cornelis Deetlefs 1902-1975 |
| Nicolaas Cornelis Deetlefs | |
| B: | 27 Aug 1902 |
| Alexandria (Olifantshoek), Oos-Kaap, Suid-Afrika | |
| D: | 27 Feb 1975 |
| Pretoria, Transvaal, Suid-Afrika | |
 | Anna Margaretha van Dyk 1905-1987 |
| Anna Margaretha van Dyk | |
| B: | 22 Apr 1905 |
| M: | 2 Aug 1926 |
| D: | 26 Jun 1987 |
| Amanzimtoti, Natal, Suid-Afrika | |
| Nicolaas Johannes Deetlefs 1880-Yes, date unknown |
| Nicolaas Johannes Deetlefs | |
| B: | CA 1870–1880 |
| D: | Yes, date unknown |
| Martha Maria Deetlefs 1882-Yes, date unknown |
| Martha Maria Deetlefs | |
| B: | CA 1870–1882 |
| D: | Yes, date unknown |
