| Name | Role | Place | Source | |
|---|---|---|---|---|
| Isidore Merckx | Witness | 1907 | Kumtich | Civil registration marriages |
| Isidore Merckx | Child | 1878 | Mechelen | Civil registration births |
| Isidore Merckx | Deceased | 1880 | Mechelen | Civil registration deaths |
| Maurice Joseph Isidore Merckx | Relation | 1954 | Aalst, ten huize van haar broeder, Bolleweg,129 Aalst | Civil registration deaths |
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