Family Group Sheet| FATHER | | Jan Wybrens Koolstra | | BIRTH | 31 January 1814 | Rinsumageest | | REF # | | 3400; | | FATHER | Wybren Pieters Koolstra | | MOTHER | Gerritje Berends | | | | MOTHER | | Froukje Meinderts Adema | | REF # | | 3401; |
| | | CHILDREN | | 1. | Meindert Jans Koolstra MALE | | | BIRTH | 17 October 1856 | Dantumadeel | | REF # | | 3398; | | MARRIAGE | 17 May 1879 | Akke Wijbes Hoekstra; Dantemadeel |
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