| Name | Role | Place | Source | |
|---|---|---|---|---|
| Constant Cockx | Witness | 1907 | Leuven | Civil registration marriages |
| Constant Cockx | Witness | 1899 | Leuven | Civil registration marriages |
| Constant Cockx | Witness | 1907 | Leuven | Civil registration marriages |
| Constant Cockx | Witness | 1892 | Leuven | Civil registration marriages |
| Constant Cockx | Child | 1874 | Leuven | Civil registration births |
| Constant Cockx | Witness | 1921 | Kessel-Lo | Civil registration marriages |
| Constant Cockx | Child | 1871 | Leuven | Civil registration births |
| Constant Meeus>Cockx | Gewettigd kind | 1894 | Leuven | Civil registration marriages |
| Jean Baptiste Constant Cockx | Child | 1859 | Leuven | Civil registration births |
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