| Name | Role | Place | Source | |
|---|---|---|---|---|
| Louis Michel Syemons | Groom | 1910 | Sint-Gillis | Civil registration marriages |
| Louis Syemons | Groom | 1880 | Brussel | Civil registration marriages |
| Louis Syemons | Witness | 1891 | Brussel | Civil registration marriages |
| Louis Syemons | Witness | 1906 | Schaarbeek | Civil registration marriages |
| Louis Syemons | Witness | 1899 | Sint-Joost-ten-Node | Civil registration marriages |
| Louis Syemons | Groom | 1899 | Brussel | Civil registration marriages |
| Paul Louis Charels>Syemons | Gewettigd kind | 1891 | Brussel | Civil registration marriages |
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