 | William van Dyk (1871-1960) 
|
 | Ida Catherine Andrews ( -1961) |
 | James John van Dyk (1907-1988)  |
| William van Dyk (1908-1988) |
| Harold van Dyk (1911-1977) |
| Jessie van Dyk (1913-1964) |
| Herbert George van Dyk (1923- ) |
| Cecil Richard van Dyk (1924-1983) |
| David Daniël van Dyk (1916-1972)
|
| Beatrice Joan Holder (1929- )
|
| Irene van Dyk (1955-1998) |
