| Name | Role | Place | Source | |
|---|---|---|---|---|
| Gregorius Postma | Registered | 1907 | Leeuwarden | Population register |
| Gregorius Postma | Registered | 1907 | Leeuwarden | Population register |
| Gregorius Postma | Groom | 1933 | Leeuwarden | Civil registration marriages |
| Gregorius Postma | Child | 1905 | Leeuwarden | Civil registration births |
| Gregorius Postma | Registered | 1905 | Leeuwarden | Population register |
| Gregorius Postma | Deceased | 1977 | Bolsward, Leeuwarden | Prayer card collection |
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