| Name | Role | Place | Source | |
|---|---|---|---|---|
| Heinrich Hubert Peter Loop | Registered | 's-Gravenhage, Herzogenrath, Kerkrade | CABR dossiers | |
| Hubert Peter Loop | Widower | 1979 | Kerkrade | Prayer card collection |
| Hubert Peter Loop | Groom | 1921 | Kerkrade | Civil registration marriages |
| Hubert Peter Loop | Registered | Amsterdam | Militia records | |
| Hubert Peter Loop | Registered | 's-Gravenhage, Wurselen (DE), Kerkrade | CABR dossiers | |
| Jan Peter Hubert Loop | Father | 1895 | Wittem | Civil registration births |
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