| Name | Role | Place | Source | |
|---|---|---|---|---|
| Constant Cosyns | Groom | 1895 | Nederhasselt | Civil registration marriages |
| Constant Cosyns | Deceased | 2011 | Seclin | Civil registration deaths |
| Constant Cosyns | Deceased | 2011 | Seclin | Civil registration deaths |
| Constant Cosyns | Child | 1856 | Outer | Civil registration births |
| Constant Cosyns | Registered | Oultre | Population register | |
| Constant Cosyns | Registered | 1856 | Oultre | Population register |
| Constant Cosyns | Registered | 1856 | Oultre | Population register |
| Jean-Pierre Constant Cosyns | Deceased | 2017 | Seclin | Civil registration deaths |
| Jean-Pierre Constant Cosyns | Deceased | 2017 | Seclin | Civil registration deaths |
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