 | Joseph Sybrand van Dyk (1897-1974) 
|
 | Anna Cecilia Swanepoel (1905-1950) |
| Gladys Sophia Aletta van Dyk (1926- )  |
| Rachel Sophia van Dyk (1927- ) |
| Veronica van Dyk (1928-2005) |
| Josephine Sybrand van Dyk (1931-2001) |
| Joseph Sybrand van Dyk (1932-2003)
|
| Catharina Jacoba Cornelissen (1939- ) |
