| Name | Role | Place | Source | |
|---|---|---|---|---|
| Constant Joseph Antoine Célestin Neeffs | Child | 1874 | Mechelen | Civil registration births |
| Constant Neeffs | Witness | 1899 | Brussel | Civil registration marriages |
| Corneel Antoon Constant Neeffs | Father | 1883 | Mechelen | Civil registration births |
| Corneel Antoon Constant Neeffs | Father | 1885 | Mechelen | Civil registration births |
| Corneille Antoine Constant Neeffs | Father | 1877 | Mechelen | Civil registration births |
| Corneille Antoine Constant Neeffs | Father | 1879 | Mechelen | Civil registration births |
| Corneille Antoine Constant Neeffs | Father | 1874 | Mechelen | Civil registration births |
| Corneille Antoine Constant Néeffs | Father | 1871 | Mechelen | Civil registration births |
| Théodore Joseph Antoine Constant Néeffs | Child | 1871 | Mechelen | Civil registration births |
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