| Name | Role | Place | Source | |
|---|---|---|---|---|
| Harmannus Helwerda | Child | 1897 | Pieterburen | Civil registration births |
| Harmannus Helwerda | Groom | 1922 | Scheemda | Civil registration marriages |
| Harmannus Helwerda | Father of groom | 1949 | Roden | Civil registration marriages |
| Harmannus Helwerda | Deceased | 1974 | Emmen, Eenrum | Civil registration deaths |
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