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 | Johannis Marinus Okkerse (1848-1925) |
 | Johanna van Vessem (1853-1906)
|
| Jacoba Okkerse (1880-1935)  |
| Catherine Cornelia Wilhelmina Okkerse (1885-1967) |
| Susanna Okkerse (1886-1934) |
| Jacomina Okkerse (1879-1933) |
| Fredrick John Ockers (1889-1940) |
| Adriaan Edward Okkerse (1878-1914) |
| Anna Okkerse (1877-1964) |
| Ralph Dewey Dederick (1880- ) |
| Pieternella Klazina Okkerse (1882-1932)
|
