Family Group Sheet| FATHER | | Klaas Kerstes Koopmans | | BIRTH | 1795 | | | DEATH | 1887 | Oosterzee buren | | FATHER | Kerst Klazes Koopmans | | MOTHER | Grietje Eises Bosma | | | | MOTHER | | Johanna Martens Kingma | | BIRTH | 1795 | | | DEATH | 1870 | Oosterzee | | FATHER | Marten Hylkes Kingma | | MOTHER | Baukje Paulusdr. Hoekema |
| | | CHILDREN | | 1. | Grietje Klazes Koopmans FEMALE | | | BIRTH | 1800 | | | DEATH | before 1865 | | | MARRIAGE | 1858 | Wigle Ages Tromp; |
| | 2. | Kerst Klazes Ruardi MALE | | | BIRTH | | Oosterzee |
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