Commune/Paroisse : Plaisance [Gers] 
| Patronymes | Périodes | Actes | |
|---|---|---|---|
| 1. | CABANES | 1732-1781 | 6 |
| 2. | CABOS | 1744-1783 | 4 |
| 3. | CAHUZAC | 1759 | 1 |
| 4. | CALET | 1785 | 1 |
| 5. | CAPDENAC | 1712-1748 | 3 |
| 6. | CAPMARTIN | 1782 | 1 |
| 7. | CARRERE | 1776 | 1 |
| 8. | CARZALION | 1767 | 1 |
| 9. | CASAMBON | 1760 | 1 |
| 10. | CASSAGNE | 1747-1772 | 2 |
| 11. | CASSAIGNE | 1787 | 1 |
| 12. | CASTAIGNON | 1711-1784 | 16 |
| 13. | CASTAY | 1753-1788 | 5 |
| 14. | CASTELNAU DE MONGAILLARD | 1774 | 1 |
| 15. | CASTETS | 1753-1787 | 7 |
| 16. | CAUPENNE | 1753-1777 | 4 |
| 17. | CAZALIEU | 1769 | 1 |
| 18. | CAZANOVE | 1756-1764 | 4 |
| 19. | CAZAUX | 1748-1784 | 4 |
| 20. | CAZENAVE | 1769 | 2 |
| 21. | CAZIEUX | 1711-1773 | 8 |
| 22. | CEZEAUX | 1751 | 1 |
| 23. | CLAJAC | 1729-1788 | 11 |
| 24. | CLARAC | 1774 | 1 |
| 25. | CLAVERIE | 1711-1784 | 7 |
| 26. | CLÉMENT | 1756 | 1 |
| 27. | COLS | 1777 | 1 |
| 28. | CONQUARÉ | 1713-1770 | 9 |
| 29. | COUGET | 1787 | 1 |
| 30. | COULAN | 1789 | 1 |
| 31. | COURNAU | 1736-1784 | 8 |
