| Name | Role | Place | Source | |
|---|---|---|---|---|
| Hendrica J.C. Beumer | Registered | Apeldoorn | Population register | |
| J.C. Beumer | Registered | 1869 | Amsterdam | Family cards |
| J.C. Beumer | Registered | LarenLaren | ||
| J.C. Beumer | Registered | Laren | ||
| J.C. Beumer | Military | 's-Gravenhage | Staat van dienst | |
| J.C. Beumer | Registered | 1858 | Amsterdam | Family cards |
| J.C. Beumer | Registered | 1887 | Vlijmen | Population register |
| J.C. Beumer | Registered | 's-Gravenhage, Arnhem | Management file | |
| J.C. Beumer | Mentioned | Leiden |
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