Family Group Sheet| FATHER | | Gerben Holkema | | BIRTH | 8 June 1930 | Sneek | | REF # | | 23; | | FATHER | Sake Holkema | | MOTHER | IJnske de Boer | | | | MOTHER | | Ada Bajema | | REF # | | 28; |
| | | CHILDREN | | 1. | Sake Gerben Holkema MALE | | | BIRTH | 4 June 1958 | Zwolle | | REF # | | 29; |
| | 2. | Trijntje Ada Holkema FEMALE | | | BIRTH | 5 May 1960 | Zwolle | | REF # | | 30; |
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