| Name | Role | Place | Source | |
|---|---|---|---|---|
| Adolf Kupper | Father | 1723 | Amsterdam | Church records baptisms |
| Adolf Kupper | Father | 1723 | Amsterdam | Church records baptisms |
| Adolf Kupper | Father | 1898 | De Maten | Civil registration deaths |
| Herman Adolf Küpper | Deceased | 1900 | Venlo / Venlo | Civil registration deaths |
| Herman Adolf Küpper | Child | 1899 | Venlo | Civil registration births |
| Herman Adolf Küpper | Child | 1899 | Venlo | Civil registration births |
| Herman Adolf Küpper | Deceased | 1900 | Venlo | Civil registration deaths |
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