| Name | Role | Place | Source | |
|---|---|---|---|---|
| Constant Wostyn | Witness | 1870 | Leuven | Civil registration births |
| Constant Wostyn | Witness | 1867 | Leuven | Civil registration births |
| Constant Wostyn | Witness | 1870 | Leuven | Civil registration births |
| Constant Wostyn | Witness | 1870 | Leuven | Civil registration births |
| Frédéric Constant Wostyn | Groom | 1871 | Leuven | Civil registration marriages |
| Frédéric Constant Wostyn | Previous partner bride | 1872 | Leuven | Civil registration marriages |
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