| Name | Role | Place | Source | |
|---|---|---|---|---|
| Jacob Alfons Merckx | Deceased | 1952 | Bornem | Prayer card collection |
| Jacob Felix Merckx | Father of bride | 1920 | Sint-Joris-Winge | Civil registration marriages |
| Jacob Felix Merckx | Witness | 1919 | Sint-Joris-Winge | Civil registration marriages |
| Jacob Merckx | Father of groom | 1923 | Haacht | Civil registration marriages |
| Jacob Merckx | Father of bride | 1885 | Brussel | Civil registration marriages |
| Philip Jacob Merckx | Child | 1883 | Mechelen | Civil registration births |
| Rene Jozef Jacob Merckx | Deceased | 1984 | Aarschot, Vissenaken | Rouwbrieven |
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