| Name | Role | Place | Source | |
|---|---|---|---|---|
| Constant DeGreef | Witness | 1873 | Sint-Jans-Molenbeek | Civil registration marriages |
| Corneille Constant Areys>Degreef | Gewettigd kind | 1890 | Etterbeek | Civil registration marriages |
| Cornelis Constant Degreef | Groom | 1909 | Etterbeek | Civil registration marriages |
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