Commune/Paroisse : Clefs (Les) [Haute-Savoie] 
| Patronymes | Périodes | Intervenant 1 | Intervenant 2 | |
|---|---|---|---|---|
| 1. | COENDET | 1657 | 1 | - |
| 2. | COHENDET | 1619-1896 | 9 | 2 |
| 3. | COHENDET ROUX | 1825-1900 | 1 | 1 |
| 4. | COLIN | 1866 | - | 1 |
| 5. | COLLOMB PATTON | 1889 | - | 1 |
| 6. | COLY | 1774 | 1 | - |
| 7. | COMMUNAL | 1901 | 1 | - |
| 8. | COMPARET | 1618-1798 | 25 | 23 |
| 9. | COMPARET CARTAZ | 1669-1707 | 2 | 2 |
| 10. | COMPARET CARTOZ | 1687 | - | 1 |
| 11. | CONSTANTIN | 1724 | 1 | - |
| 12. | CORNU | 1853-1873 | 1 | 1 |
| 13. | CORNUT | 1813 | 1 | - |
| 14. | COTTU | 1831 | 1 | - |
| 15. | COUTERLAZ REINAZ | 1758 | - | 1 |
| 16. | COUTURIER | 1821-1877 | 1 | 1 |