| Name | Role | Place | Source | |
|---|---|---|---|---|
| Coenradus Jacobus Cornelis de Keyzer | Groom | 1883 | Rotterdam | Civil registration marriages |
| Coenradus Jacobus Cornelis de Keyzer | Groom | 1883 | Rotterdam | Civil registration marriages |
| Cornelis Jacobus Keyzer | Registered | 1877 | Amsterdam | Police reports |
| Jacobus Joannes Cornelis Josephus Keyzer | Registered | 1880 | Population register | |
| Jacobus Johannes Cornelis Josephus Keyzer | Registered | 1880 | Ede | Population register |
| Jacobus Johannes Cornelis Keyzer | Child | 1919 | Wouw | Civil registration births |
| Jacobus Johannes Cornelis Keyzer | Child | 1919 | Wouw | Civil registration births |
| Jacobus Simon Cornelis de Keyzer | Partner | 1971 | Dordrecht | Civil registration deaths |
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