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 | Sybrand Jacobus van Dyk (1872- )
|
 | Zacharia Catharina Maartens (1874-1951)
|
| Aletta Johanna Magdalena van Dyk (1894- ) |
| Martha Johanna van Dyk (1895- ) |
| Adriaan Lourens Albertus van Dyk (1902-1960)  |
| Sybrand Jacobus van Dyk (1904-1972) |
| Joachim Hendrik van Dyk (1906- ) |
| Zacharia Catharina van Dyk (1909-1936) |
| Prof. David Frederik van Dyk (1913-1974) |
| Joachim Hendrik van Dyk (1905-1990)
|
| Emily Benson (1913-1990) |
