Commune/Paroisse : Saint Geniez d'Olt
| Patronymes | Périodes | Intervenant 1 | Intervenant 2 | |
|---|---|---|---|---|
| 1. | COCHE | 1878 | 1 | - |
| 2. | COLLARD | 1878 | 1 | - |
| 3. | COLOMB | 1827 | 1 | - |
| 4. | COLON | 1851 | - | 1 |
| 5. | COLRAT | 1840-1890 | 1 | 3 |
| 6. | COMBACAU | 1799-1901 | 11 | 9 |
| 7. | COMBAREL | 1792-1834 | 2 | - |
| 8. | COMBES | 1800-1886 | 5 | 4 |
| 9. | COMBRET | 1860 | 1 | - |
| 10. | COMPE | 1845 | 1 | - |
| 11. | COMPEYRON | 1892 | 1 | - |
| 12. | COMTE | 1843-1890 | - | 5 |
| 13. | COMTES | 1827 | 1 | - |
| 14. | CONQUET | 1825-1849 | - | 2 |
| 15. | CONTE | 1851-1876 | 1 | 1 |
| 16. | CONTOU | 1902 | - | 1 |
| 17. | CORNUEJOULS | 1818-1901 | 2 | 8 |
| 18. | COSTE | 1810-1902 | 1 | 1 |
| 19. | COSTECALDE | 1840-1864 | 1 | 1 |
| 20. | COSTERASTE | 1863-1882 | 2 | - |
| 21. | COSTES | 1794-1888 | 15 | 19 |
| 22. | COSTY | 1804 | - | 1 |
| 23. | COUDERC | 1794-1884 | 1 | 4 |
| 24. | COUDERQ | 1828 | - | 1 |
| 25. | COUDERY | 1846 | 1 | - |
| 26. | COUFFINHAL | 1864 | - | 1 |
| 27. | COUFINHAL | 1859-1885 | 2 | - |
| 28. | COUMOULET | 1827 | - | 1 |
| 29. | COURECH | 1815 | - | 1 |
| 30. | COURET | 1792-1882 | 5 | 5 |
| 31. | COURET DU TERRAIL | 1814 | - | 1 |
| 32. | COURNAT | 1807 | 1 | - |
| 33. | COURREGE | 1867 | - | 1 |
| 34. | COURTIAL | 1800-1900 | 7 | 11 |
| 35. | COURTINES | 1804-1857 | 1 | 4 |
| 36. | COURTOIS | 1894 | 1 | - |
| 37. | COUSIN | 1833-1855 | 1 | 1 |
| 38. | COUSTOU | 1810-1859 | 1 | 4 |
| 39. | COUSTY | 1889 | 1 | - |
| 40. | COUTIAL | 1901 | 1 | - |
| 41. | COUTOU | 1860-1899 | 3 | 3 |