| Name | Role | Place | Source | |
|---|---|---|---|---|
| D. Modderman | Signatory | 1878 | 's-Gravenhage | Verzoekschriften |
| D. Modderman | Registered | 1970 | Leeuwarden | Chamber of Commerce |
| D. Modderman | Military | 's-Gravenhage | Staat van dienst | |
| D. Modderman | Registered | 1840 | Den Helder | Population register |
| Etje D Modderman | Mother | 1747 | Groningen | Church records baptisms |
| Etje D. Modderman | Mother | 1745 | Groningen | Church records baptisms |
| Jan Modderman, zoon Jan T. Modderman en Etje D. Modderman | Groom | 1777 | Notarial records | |
| Trijntie D. Modderman | Bruids zijde | 1758 | Groningen | Registrations before 1811 |
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