| Name | Role | Place | Source | |
|---|---|---|---|---|
| Sebastien Costermans | Witness | 1820 | Brussel | Civil registration marriages |
| Sebastien Costermans | Father of bride | 1853 | Brussel | Civil registration marriages |
| Sebastien Costermans | Father of groom | 1852 | Sint-Jans-Molenbeek | Civil registration marriages |
| Sébastien Costermans | Father of groom | 1860 | Brussel | Civil registration marriages |
| Sébastien Costermans | Father of groom | 1851 | Brussel | Civil registration marriages |
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