| Name | Role | Place | Source | |
|---|---|---|---|---|
| Arthur Alfred Ildefonse Mercelis | Groom | 1874 | Elsene | Civil registration marriages |
| Arthur Alfred Ildefonse Mercelis | Father of bride | 1910 | Namur | Civil registration marriages |
| Arthur Alfred Ildefonse Mercelis | Father of bride | 1910 | Namur | Civil registration marriages |
| Ildefonse Adolphe Marie Mercelis | Groom | 1900 | Sint-Joost-ten-Node | Civil registration marriages |
| Ildefonse Mercelis | Witness | 1884 | Anderlecht | Civil registration marriages |
| Ildefonse Mercelis | Witness | 1901 | Sint-Joost-ten-Node | Civil registration marriages |
| Ildefonse Mercelis | Witness | 1853 | Sint-Joost-ten-Node | Civil registration marriages |
| Pierre Ildefonse Mercelis | Father of groom | 1874 | Elsene | Civil registration marriages |
| Pierre Ildefonse Mercelis | Father of groom | 1873 | Brussel | Civil registration marriages |
| Pierre Ildefonse Mercelis | Witness | 1884 | Elsene | Civil registration marriages |
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