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 | Johannis Marinus Okkerse (1848-1925) |
 | Johanna van Vessem (1853-1906)
|
| Jacoba Okkerse (1880-1935)  |
| Catherine Cornelia Wilhelmina Okkerse (1885-1967) |
| Pieternella Klazina Okkerse (1882-1932) |
| Susanna Okkerse (1886-1934) |
| Jacomina Okkerse (1879-1933) |
| Adriaan Edward Okkerse (1878-1914) |
| Anna Okkerse (1877-1964) |
| Jacob Slager (1866-1946) |
| Alena or Elena Van De Griek (1866-1931)
|
| Katherine Slager (1902- ) |
| Maud Slager (1901- ) |
| Lydia Slager (1904-1984) |
| Neetlje "Nellie" Slager (1899-1984) |
| Peter Slager (1897- ) |
| Lydia Slager (1895-1903) |
| Jacob Slager (1906-1992) |
| Thomas Slager (1893-1965) |
| Thomas Slager (1887-1887) |
| Alena Slager (1907-1908) |
| Marinus Thomas Slager (1888-1967) |
| Alena Slager (1909-1912) |
| Marinus Slager (1887-1887) |
| Jannetje Lydia "Jennette" Slager (1891-1980)
|
| Fredrick John Ockers (1889-1940)
|
| Helena Josephine "Helene" or "Helen" Ockers (1915-1983) |
