| Name | Role | Place | Source | |
|---|---|---|---|---|
| Henri Lambert Emmanuel Cockx | Groom | 1921 | Herent | Civil registration marriages |
| Lambert Cockx | Witness | 1902 | Anderlecht | Civil registration marriages |
| Lambert Cockx | Witness | 1901 | Vilvoorde | Civil registration marriages |
| Lambert Cockx | Witness | 1900 | Vilvoorde | Civil registration marriages |
| Lambert Cockx | Witness | 1906 | Vilvoorde | Civil registration marriages |
| Lambert Josse Cockx | Child | 1874 | Leuven | Civil registration births |
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