 | Gerhardus Johannes van Dyk (1886-1956) 
|
 | Martha Christina Johanna Visser (1891- )
|
| Petrus Barend Christoffel van Dyk (1912-1982)  |
| Johanna Carolina Gertruida van Dyk (1913- ) |
| Antonie Johannes van Dyk (1915- ) |
| Gerhardus Johannes van Dyk (1916-1985) |
| Martha Christina Johanna van Dyk (1920-1997) |
 | Joseph Sybrandt van Dyk (1925-2004) |
| Maria Elizabeth van Dyk (1918- )
|
