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 | Gerbrand Hendrik Ketz (1802-1866)
|
| Wijmpje van den Born (1808-1890)
|
Arend Ketz (1830-1901)  |
 | Gijsbert Albertus Ketz (1831-1913) |
 | Albertus Ketz (1833-1886) |
 | Evert Ketz (1836-1836) |
| Aaltje Ketz (1837-1918) |
 | Evert Ketz (1842-1911) |
| Grada Johanna Ketz (1846-1849) |
| Hendrik Ketz (1850-1926) |
 | Dirk Bernardus Ketz (1840-1910)
|
| Derkje Wentink (1845-1918)
|
| Gerbrand Hendrik Ketz (1866-1875) |
| Christina Willemina Ketz (1868-1869) |
| Dirkje Ketz (1869-1941) |
| Wijntje Ketz (1871-1875) |
 | Johanna Ketz (1874- ) |
| Wijntje Ketz (1876- ) |
| Maria Ketz (1879-1922) |
 | Gerrebrand Hendrik Ketz (1883- ) |
| Christina Ketz (1886- ) |
