Commune/Paroisse : Castelsarrasin / Saint Sauveur [Tarn-et-Garonne] 
| Patronymes | Périodes | Actes | |
|---|---|---|---|
| 1. | THAMOGNEAU | 1752 | 1 |
| 2. | THEMINES | 1730-1777 | 24 |
| 3. | THEULIN | 1689 | 1 |
| 4. | THIERON | 1781 | 1 |
| 5. | THOBÉ | 1652 | 1 |
| 6. | THOMAS | 1637-1772 | 3 |
| 7. | THOMAZET | 1663-1694 | 10 |
| 8. | THOMINES | 1790 | 1 |
| 9. | THORET | 1673 | 1 |
| 10. | THORO | 1693-1772 | 6 |
| 11. | THORON | 1691 | 1 |
| 12. | THOUGES | 1668-1682 | 4 |
| 13. | THOUMAZET | 1670-1682 | 3 |
| 14. | THOUSAC | 1702 | 1 |
| 15. | THOUSEL | 1652 | 1 |
| 16. | THOUZAC | 1653-1714 | 6 |
| 17. | THOUZEL | 1642-1694 | 5 |
| 18. | THOUZOULI | 1678 | 1 |
| 19. | THRACET | 1754 | 1 |
| 20. | THURIES | 1661 | 1 |
