| Male Jan Harm Jacobus du Plessis |
| Birth | Abt 1842 | Cradock, South Africa |
| Death | Abt 1863 | Potchefstroom, South Africa |
| Burial | ||
| Marriage | ||
| Father | Gert Johannes du Plessis | F473 Group Sheet | |
| Mother | Gertruida Catherina Petronella Margaretha Labuschangne | F473 Group Sheet | |
| Female Gertruida Maria Jansen |
| Birth | Abt 1841 | Cape Town, South Africa |
| Death | 14 Nov 1875 | Reddersburg, South Africa |
| Burial | ||
| Father | ||
| Mother | ||
+ Frans Jacob du Plessis |
| Birth | 15 Oct 1876 | Middelburg, South Africa |
| Death | ||
| Burial | ||
| Spouse | Aletta Maria Lee | F468 | |
| Marriage | ||
| Male Cornelius Adriaan Jan Harm Jacobus du Plessis |
| Birth | 10 Jun 1858 | Potchefstroom, South Africa |
| Death | 8 Aug 1939 | |
| Burial |