| Name | Role | Place | Source | |
|---|---|---|---|---|
| Johannes Petrus Gerardus Hendricus Leeuwenberg | Father | 1893 | Delft | Civil registration births |
| Johannes Petrus Gerardus Hendricus Leeuwenberg | Father of groom | 1928 | Haarlem | Civil registration marriages |
| Johannes Petrus Gerardus Hendricus Leeuwenberg | Father | 1936 | Nijmegen | Civil registration deaths |
| Johannes Petrus Gerardus Hendricus Leeuwenberg | Registered | 1900 | 's-Gravenhage | Notarial records |
| Johannes Petrus Gerardus Hendricus Leeuwenberg | Registered | 1900 | 's-Gravenhage | Notarial records |
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