| Name | Role | Place | Source | |
|---|---|---|---|---|
| Pierre Joseph Marie Triangle | Father | 1887 | Leuven | Civil registration births |
| Pierre Joseph Marie Triangle | Father of bride | 1911 | Leuven | Civil registration marriages |
| Pierre Joseph Marie Triangle | Father | 1883 | Leuven | Civil registration births |
| Pierre Joseph Marie Triangle | Groom | 1882 | Leuven | Civil registration marriages |
| Pierre Joseph Triangle | Father | 1884 | Leuven | Civil registration births |
| Pierre Joseph Triangle | Father of bride | 1910 | Leuven | Civil registration marriages |
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