Commune/Paroisse : Onnion [Haute-Savoie] 
| Patronymes | Périodes | Intervenant 1 | Intervenant 2 | |
|---|---|---|---|---|
| 1. | CHAMOT | 1868-1919 | 2 | 1 |
| 2. | CHAMOT DIT BOLIER | 1647 | - | 1 |
| 3. | CHAMOT? | 1642 | - | 1 |
| 4. | CHAMOUT | 1696 | - | 1 |
| 5. | CHARDON | 1689-1913 | 16 | 9 |
| 6. | CHARLET | 1823 | - | 1 |
| 7. | CHARLETY | 1876-1886 | - | 3 |
| 8. | CHATEL | 1903 | 1 | - |
| 9. | CHAVANA | 1632 | - | 1 |
| 10. | CHAVANAZ | 1635 | 1 | - |
| 11. | CHAVANELLE | 1697 | - | 1 |
| 12. | CHAVANNAZ | 1797-1839 | 5 | 9 |
| 13. | CHAVANNAZA | 1811 | 1 | - |
| 14. | CHAVANNE | 1669-1911 | 8 | 9 |
| 15. | CHAVANNES | 1842-1843 | - | 2 |
| 16. | CHENEVAL | 1684-1912 | 6 | 3 |
| 17. | CHERDON | 1626-1802 | 2 | 3 |
| 18. | CHEVAILLER | 1900 | 1 | - |
| 19. | CHEVALLIER | 1874 | 1 | - |
| 20. | CHEVRIER | 1660-1914 | 10 | 8 |
| 21. | CHEVRY | 1704 | - | 1 |
| 22. | CHOUARD | 1835 | - | 1 |
| 23. | CHRESTIN | 1634 | - | 1 |
| 24. | CHRISTIN | 1635-1666 | 2 | 1 |
| 25. | CHUARD | 1839-1892 | 3 | 1 |
| 26. | CHUART | 1893 | - | 1 |