| Name | Role | Place | Source | |
|---|---|---|---|---|
| Geertruida Kopper | Child | 1920 | Zaandam | Civil registration births |
| Geertruida Kopper | Registered | 1883 | Zaandam | Population register |
| Geertruida Kopper | Registered | 1883 | Koog aan de Zaan, Zaandam | Population register |
| Geertruida Wilhelmina Kopper | Registered | 1874 | Krommenie | Population register |
| Geertruida Wilhelmina Kopper | Registered | Krommenie | Population register | |
| Geertruida Wilhelmina Kopper | Bride | 1923 | Krommenie | Civil registration marriages |
| Geertruida Wilhelmina Kopper | Registered | 1866 | Krommenie | Population register |
| Nelia Geertruida van de Kopper | Eerdere partner | 1877 | Rotterdam | Civil registration deaths |
| Nelia Geertruida van de Kopper | Eerdere partner | 1877 | Rotterdam | Civil registration deaths |
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