Commune/Paroisse : Orbais (EC) [Brabant wallon]
| Patronymes | Périodes | Actes | |
|---|---|---|---|
| 1. | THAYSE | 1810-1912 | 23 |
| 2. | THEYS | 1835-1863 | 4 |
| 3. | THEYSE | 1854 | 1 |
| 4. | THIRION | 1817-1902 | 5 |
| 5. | THIRY | 1799 | 1 |
| 6. | THONNE | 1797-1909 | 15 |
| 7. | THOUNE | 1881-1886 | 3 |
| 8. | THYRION | 1864-1903 | 6 |
| 9. | TIREUR | 1843-1904 | 2 |
| 10. | TIREUX | 1874 | 1 |
| 11. | TOEGERS | 1893-1897 | 2 |
| 12. | TOMBOIR | 1831-1844 | 2 |
| 13. | TOMBOIS | 1859-1869 | 2 |
| 14. | TONNE | 1821-1837 | 2 |
| 15. | TREMOUROUX | 1888 | 1 |
| 16. | TRICOT | 1796-1909 | 46 |
| 17. | TUYMANS | 1803 | 1 |