| Name | Role | Place | Source | |
|---|---|---|---|---|
| Albert François Mathieu Auguste Crets | Groom | 1866 | Mons | Civil registration marriages |
| Albert François Mathieu Auguste Crets | Father | 1867 | Mons | Civil registration births |
| Albert François Mathieu Auguste Crets | Father | 1868 | Mons | Civil registration deaths |
| Auguste Crets | Witness | 1900 | Brussel | Civil registration marriages |
| Auguste Crets | Witness | 1899 | Sint-Joost-ten-Node | Civil registration marriages |
| Auguste Crets | Witness | 1895 | Sint-Jans-Molenbeek | Civil registration marriages |
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