| Name | Role | Place | Source | |
|---|---|---|---|---|
| Etienne Joseph Mathieu Thonard | Deceased | 1858 | Liège | Civil registration deaths |
| Etienne Joseph Mathieu Thonard | Child | 1845 | Liège | Civil registration births |
| Jean Henri Mathieu Thonard | Child | 1834 | Liège | Civil registration births |
| Jean Mathieu Thonard | Father | 1864 | Liège | Civil registration deaths |
| Léon Nicolas Mathieu Julien Thonard | Child | 1900 | Liège | Civil registration births |
| Mathieu Charles Godefroid Thonard | Father | 1870 | Liège | Civil registration births |
| Mathieu Thonard | Partner | 1886 | Liège | Civil registration deaths |
| Mathieu Thonard | Father | 1870 | Liège | Civil registration deaths |
| Mathieu Thonard | Father | 1805 | Liège | Civil registration births |
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