 | Joseph Johannes van Dyk (1882-1964) 
|
 | Hester Hendrina Catharina Steyn (1888-1945)
|
| Magrietha Johanna van Dyk (1907-1993)  |
| van Dyk (1910-1910) |
| Josias Michael van Dyk (1911-1993) |
| Sybrand Jacobus van Dyk, i (1913-1914) |
| Sybrand Jacobus van Dyk, ii (1915-1998) |
| Joseph Johannes van Dyk (1906-1976)
|
| Jane Elizabeth Holder (1907-1988) |
| Joseph Johannes van Dyk (1949-1984) |
