| Name | Role | Place | Source | |
|---|---|---|---|---|
| Constant Guilielmus Sempels | Child | 1901 | Pellenberg | Civil registration births |
| Constant Sempels | Witness | 1920 | Lubbeek | Civil registration marriages |
| Constant Sempels | Witness | 1920 | Lubbeek | Civil registration marriages |
| Constant Sempels | Groom | 1919 | Lubbeek | Civil registration marriages |
| Constant Sempels | Witness | 1923 | Lubbeek | Civil registration marriages |
| Constant Sempels | Child | 1909 | Kessel-Lo | Civil registration births |
| Michel Constant Sempels | Child | 1870 | Leuven | Civil registration births |
| Robert Jean Paul Constant Sempels | Groom | 1900 | Sint-Joost-ten-Node | Civil registration marriages |
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