Commune/Paroisse : Ruffieux [Savoie] 
| Patronymes | Périodes | Intervenant 1 | Intervenant 2 | |
|---|---|---|---|---|
| 1. | COCHET | 1684 | - | 1 |
| 2. | COËN | 1704-1896 | 9 | 13 |
| 3. | COËN-LE PETIT | 1805 | 1 | - |
| 4. | COËN/COHEN | 1794 | 1 | - |
| 5. | COËNE | 1725 | 1 | 1 |
| 6. | COËNX | 1731 | - | 1 |
| 7. | COHEN | 1660-1746 | 1 | 1 |
| 8. | COHEN/COËN | 1802 | 1 | - |
| 9. | COHENDET | 1660 | 1 | - |
| 10. | COIN | 1678 | 1 | 1 |
| 11. | COINGT | 1818 | 1 | - |
| 12. | COLLOMB | 1673-1739 | 4 | 2 |
| 13. | COLLOMBET | 1898 | 1 | - |
| 14. | COLLON | 1669-1699 | 3 | - |
| 15. | COLLONGES | 1837 | 1 | - |
| 16. | COLOMB | 1677 | 1 | - |
| 17. | COMBEPINE | 1813 | - | 1 |
| 18. | COMBEPINE-GARAS | 1799 | - | 1 |
| 19. | COMBEPINE-JARA | 1779 | 1 | - |
| 20. | COMMOZ/COMOZ | 1832 | 1 | - |
| 21. | COMPERE | 1849 | 1 | - |
| 22. | CONAND | 1732 | 1 | - |
| 23. | CONSTANTIN | 1867 | 1 | - |
| 24. | CONTE | 1677 | 1 | - |
| 25. | CONVERSY | 1813 | 1 | - |
| 26. | CORDIER | 1739 | - | 1 |
| 27. | CORNON | 1696 | - | 1 |
| 28. | CORNON-HENRY | 1670 | 1 | - |
| 29. | COTIN | 1740 | - | 1 |
| 30. | COTTAIN | 1687-1699 | - | 3 |
| 31. | COTTAREL | 1865 | 1 | - |
| 32. | COTTE | 1854 | 1 | - |
| 33. | COTTET | 1891-1892 | 2 | - |
| 34. | COTTIN | 1666-1677 | 2 | - |
| 35. | COUDURIER | 1835-1879 | 1 | 4 |
| 36. | COURAGEUX | 1898 | 1 | - |
| 37. | COURDIER | 1706 | - | 1 |
| 38. | COUTIN | 1726 | 1 | - |