| Name | Role | Place | Source | |
|---|---|---|---|---|
| Gradus Wollenberg | Child | 1847 | Ottersum | Civil registration births |
| Gradus Wollenberg | Child | 1817 | Bergharen | Civil registration births |
| Gradus Wollenberg | Deceased | 1817 | Bergharen | Civil registration deaths |
| Gradus Wollenberg | Registered | 1850 | Nijmegen, Kuik | Population register |
| Gradus van den Wollenberg | Mention | 1823 | Nijmegen | Notarial records |
| Gradus van den Wollenberg | Mention | 1844 | Nijmegen | Notarial records |
| Gradus van den Wollenberg | Registered | 1850 | Nijmegen, Kuijk | Population register |
| Gradus van den Wollenberg | Mention | 1833 | Nijmegen | Notarial records |
| Gradus van den Wollenberg | Mention | 1820 | Nijmegen | Notarial records |
| Gradus van den Wollenberg | Mention | 1820 | Nijmegen | Notarial records |
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