| Nom | Rôle | Lieu | Source | |
|---|---|---|---|---|
| Barend Keyzer | Inscrit | 1 | Zaandam | Registre de la population |
| Barend Keyzer | Témoin | 1795 | Leiden | |
| Barend Keyzer | Poorter | 1792 | Leiden | |
| Barend Keyzer | Inscrit | Leiden, Leiderdorp | ||
| Jacob Barend Keyzer | Inscrit | 1822 | Inschrijfregister | |
| Jan Barend Keyzer | Inscrit | Amsterdam | Waterloo gratificaties 1815 |
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