| Name | Role | Place | Source | |
|---|---|---|---|---|
| Johanna M.C. van Leeuwen | Registered | 1885 | Oss | Population register |
| Johanna M.C. van Leeuwen | Registered | 1885 | Oss | Population register |
| Johanna M.C. van Leeuwen | Registered | 1885 | Oss | Population register |
| Johanna M.C. van Leeuwen | Registered | 1910 | Nijmegen | Population register |
| M.C. van Leeuwen | Registered | 1902 | Amsterdam | Family cards |
| M.C. van Leeuwen | Signatory | 1878 | 's-Gravenhage | Verzoekschriften |
| M.C. van Leeuwen | Signatory | 1878 | 's-Gravenhage | Verzoekschriften |
| M.C. van Leeuwen | Travelers | 1959 | Rotterdam | Passenger registers |
| M.C. van Leeuwen | Civil servant | Studbooks | ||
| M.C. van Leeuwen | Signatory | 1878 | 's-Gravenhage | Verzoekschriften |
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