| Name | Role | Place | Source | |
|---|---|---|---|---|
| Franciscus Hermanus Decoster | Groom | 1919 | Heverlee | Civil registration marriages |
| Hermanus Decoster | Witness | 1840 | Duisburg | Civil registration marriages |
| Hermanus Decoster | Father of bride | 1853 | Overijse | Civil registration marriages |
| Hermanus Decoster | Father of groom | 1843 | Duisburg | Civil registration marriages |
| Hermanus Decoster | Father of bride | 1853 | Overijse | Civil registration marriages |
| Hermanus Decoster | Witness | 1827 | Duisburg | Civil registration marriages |
| Ludovicus Hermanus Decoster>Andries | Gewettigd kind | 1899 | Bierbeek | Civil registration marriages |
| Ludovicus Hermanus Decoster>Andries | Child | 1899 | Bierbeek | Civil registration births |
| Petrus Hermanus Decoster | Child | 1876 | Oud-Heverlee | Civil registration births |
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