| Name | Role | Place | Source | |
|---|---|---|---|---|
| Gustave Clement Dervaux | Deceased | 1998 | Haubourdin | Civil registration deaths |
| Gustave Clement Dervaux | Deceased | 1998 | Haubourdin | Civil registration deaths |
| Gustave Dervaux | Witness | 1882 | Brussel | Civil registration marriages |
| Gustave Dervaux | Father | 1905 | Dinant | Civil registration births |
| Gustave Dervaux | Father | 1901 | Dinant | Civil registration births |
| Gustave Dervaux | Witness | 1904 | Brussel | Civil registration marriages |
| Gustave Etienne Mowger-Dervaux | Registered | Antwerpen | Foreigners register | |
| Henri Gustave Dervaux | Groom | 1888 | Brussel | Civil registration marriages |
| Louis Gustave Dervaux | Registered | 1878 | Brussel | Alien files |
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