Gezin: Frederik Klaas Freriks / Johanna Koster (F4151)
getr. 03 nov 1875Harmen Koster (1807- ) 
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Maria Helena Feun (1816-1880)
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| Harmen Koster (1841- ) |
| Roelof Koster (1846- ) |
| Derk Koster (1849- ) |
Martinus Koster (1856- )  |
| Evert Koster (1859- ) |
| Johanna Koster (1845- )
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| Frederik Klaas Freriks (1839- )
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