| Name | Role | Place | Source | |
|---|---|---|---|---|
| Ruurt Keizer | Father | 1856 | Blokzijl | Civil registration deaths |
| Ruurt Keizer | Father of bride | 1895 | Aduard | Civil registration marriages |
| Ruurt Keizer | Father | 1935 | Bedum | Civil registration deaths |
| Ruurt Keizer | Father | 1846 | Blokzijl | Civil registration deaths |
| Ruurt Pieters Keizer | Deceased | 1831 | Kantoor - Zuidbroek | Death duties files |
| Ruurt Pieters Keizer | Deceased | 1831 | Veendam | Civil registration deaths |
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