| Name | Role | Place | Source | |
|---|---|---|---|---|
| Johan Edmumd Offermann | Deceased | 1919 | Bocholtz | Civil registration deaths |
| Johan Nicolas Offermann | Father of groom | 1912 | Kerkrade | Civil registration marriages |
| Johan Offermann | Father | 1882 | Rotterdam | Civil registration deaths |
| Johan Offermann | Registered | Vincennes/Parijs | Studbooks | |
| Johan Offermann | Father | 1882 | Rotterdam | Civil registration deaths |
| Johan Wilhelm Offermann | Father | 1930 | Heel & Panheel | Civil registration deaths |
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