| Name | Role | Place | Source | |
|---|---|---|---|---|
| Pierre Antoin Francs Mensing | Registered | 1851 | Amsterdam | Population register |
| Pierre Antoine F. Mensing | Registered | 1851 | Amsterdam | Population register |
| Pierre Gerard Mensing | Witness | 1835 | Brussel | Civil registration marriages |
| Pierre Guillaume Mensing | Registered | 1817 | Amsterdam | Population register |
| Pierre Jr Guille Mensing | Registered | Antwerpen | Foreigners register | |
| Pierre Mensing | Registered | Vincennes/Parijs | Studbooks | |
| Pierre Mensing | Registered | Vincennes/Parijs | Studbooks | |
| Pierre Mensing | Witness | 1852 | Brussel | Civil registration marriages |
| Pierre Mensing | Father | 1860 | Sint-Truiden | Civil registration deaths |
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