Family Group Sheet| FATHER | | Jacob Holkema | | REF # | | 27; | | FATHER | Sake Holkema | | MOTHER | IJnske de Boer | | | | MOTHER | | Annemarie Harder | | REF # | | 46; |
| | | CHILDREN | | 1. | Sake Holkema MALE | | | BIRTH | 25 March 1966 | Groningen | | REF # | | 47; | | MARRIAGE | 17 June 2008 | Petra Knip; Haarlem | | MARRIAGE | 23 September 1998 | Ellen Frouwke Schaaf; Groningen |
| | 2. | Marinus Holkema MALE | | | BIRTH | 19 July 1967 | Drachten | | REF # | | 48; | | MARRIAGE | 2 May 2000 | Hendrikje Aafke (Ria) Bekkema; |
| | 3. | Johanna Cornelia (Annekee) Holkema FEMALE | | | BIRTH | 1 April 1971 | Drachten | | REF # | | 49; |
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