| Name | Role | Place | Source | |
|---|---|---|---|---|
| Jan Carel Fredrik van Leeuwen | Registered | 1823 | Amsterdam | Population register |
| Jan Carel Fredrik van Leeuwen | Groom | 1866 | Amsterdam | Civil registration marriages |
| Jan Carel Fredrik van Leeuwen | Registered | 1828 | Amsterdam | Militia records |
| Jan Carel Fredrik van Leeuwen | Person in notarial deed | 1866 | Hoorn | Notarial records |
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