| Name | Role | Place | Source | |
|---|---|---|---|---|
| Hippolyte Declercq | Witness | 1875 | Brussel | Civil registration marriages |
| Hippolyte Declercq | Witness | 1888 | Etterbeek | Civil registration marriages |
| Hippolyte Declercq | Witness | 1897 | Brussel | Civil registration marriages |
| Hippolyte Declercq | Witness | 1901 | Elsene | Civil registration marriages |
| Hippolyte Declercq | Witness | 1897 | Schaarbeek | Civil registration marriages |
| Hippolyte Declercq | Witness | 1862 | Brussel | Civil registration marriages |
| Jean Hippolyte Roland Declercq | Deceased | 1991 | Pau | Civil registration deaths |
| Jean Hippolyte Roland Declercq | Deceased | 1991 | Pau | Civil registration deaths |
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