Commune/Paroisse : Saint-Roch [Haute-Savoie] 
| Patronymes | Périodes | Intervenant 1 | Intervenant 2 | |
|---|---|---|---|---|
| 1. | COCHET | 1828 | 1 | - |
| 2. | COLLAVIN | 1881 | - | 1 |
| 3. | COLLYRAUD | 1844 | 1 | - |
| 4. | COMMUNAL | 1814 | 1 | - |
| 5. | COMTAT | 1850 | - | 1 |
| 6. | COMTE | 1860 | - | 1 |
| 7. | CONDEVAUX | 1827 | - | 1 |
| 8. | CONSEIL | 1822-1939 | 4 | 3 |
| 9. | CONTE | 1903 | 1 | - |
| 10. | CONTI | 1888 | 1 | - |
| 11. | CORBEX | 1816 | - | 1 |
| 12. | CORDIER | 1912 | 1 | - |
| 13. | CORNU | 1842-1936 | 1 | 1 |
| 14. | CORNUX | 1857 | 1 | - |
| 15. | COSTAFROLAZ | 1872 | 1 | - |
| 16. | COUDRAY | 1890 | 1 | - |
| 17. | COULAVIN | 1878 | - | 1 |
| 18. | COUTTET | 1853-1912 | 2 | - |
| 19. | COUTTIN | 1814 | - | 1 |