Family Group Sheet| FATHER | | Gerrit Koolstra | | BIRTH | 6 June 1925 | Wouterswoude | | DEATH | 2 August 2003 | Drouma Nursing Home, Victoria, Australië | | REF # | | 3394; | | FATHER | Sytse Meinderts Koolstra | | MOTHER | Romkje de Vries | | | | MOTHER | | Greta van Kooten | | REF # | | 3406; | | FATHER | Laurens van Kooten | | MOTHER | Johanna Bas |
| | | CHILDREN | | 1. | Raymond Laurens Koolstra MALE | | | REF # | | 3395; |
| | 2. | Bernard Sytse Koolstra MALE | | | REF # | | 3410; |
| | 3. | Johanna Koolstra FEMALE | | | REF # | | 3409; |
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