Commune/Paroisse : Brens [Haute-Savoie] 
| Patronymes | Périodes | Actes | |
|---|---|---|---|
| 1. | CADDOUX | 1922 | 1 |
| 2. | CARRIER | 1909-1934 | 4 |
| 3. | CENEDESE | 1925 | 1 |
| 4. | CERUTTI | 1932 | 1 |
| 5. | CHABOT | 1808 | 1 |
| 6. | CHALLANDE | 1886 | 1 |
| 7. | CHALLON | 1608-1627 | 4 |
| 8. | CHALOJN | 1671 | 1 |
| 9. | CHALON | 1670-1675 | 2 |
| 10. | CHAMBEROT | 1826 | 1 |
| 11. | CHAMPURRY | 1705 | 1 |
| 12. | CHAPEL | 1760-1790 | 2 |
| 13. | CHAPPUIS | 1913 | 1 |
| 14. | CHAPUIS | 1680-1942 | 3 |
| 15. | CHARMOT | 1705-1964 | 23 |
| 16. | CHARMOZ | 1819 | 1 |
| 17. | CHARQUOT | 1691 | 1 |
| 18. | CHARRIERE | 1910-1962 | 2 |
| 19. | CHATRE | 1854 | 2 |
| 20. | CHAUDERON | 1950 | 1 |
| 21. | CHAUFAZ | 1699 | 1 |
| 22. | CHAUFFARD | 1676 | 1 |
| 23. | CHAUFFAT | 1815-1828 | 4 |
| 24. | CHAUFFAZ | 1849-1888 | 6 |
| 25. | CHEDAL | 1764 | 1 |
| 26. | CHENEVAL | 1956 | 1 |
| 27. | CHENEVAZ | 1867 | 1 |
| 28. | CHENEVIER | 1853 | 1 |
| 29. | CHEVALLIER | 1819 | 1 |
| 30. | CICLET | 1624 | 1 |
| 31. | CLAIRENS | 1780-1926 | 2 |
| 32. | CLARAZ | 1916 | 1 |
| 33. | CLERC | 1808-1833 | 2 |
| 34. | CLERINO | 1955-1957 | 2 |
| 35. | CLOUYE | 1872 | 1 |
| 36. | CLOYE | 1680 | 1 |
| 37. | COFFY | 1914 | 1 |
| 38. | COHANIER | 1964 | 1 |
| 39. | COLLOMB | 1807-1920 | 19 |
| 40. | COMMAN | 1939 | 1 |
| 41. | COMPOIX | 1834-1843 | 2 |
| 42. | CONDEVAUX | 1879 | 1 |
| 43. | CONSTANTIN | 1872-1875 | 2 |
| 44. | CORDY | 1784 | 1 |
| 45. | CORNU | 1965 | 1 |
| 46. | COTTET | 1745-1922 | 7 |
| 47. | COTTIER | 1696 | 1 |
| 48. | COURTY | 1907 | 1 |
| 49. | CRETALLAZ | 1884-1937 | 6 |
| 50. | CULLAND | 1609 | 1 |
| 51. | CULLAUD | 1809-1859 | 5 |
| 52. | CULOZ | 1882 | 1 |
| 53. | CUSIN | 1928-1958 | 2 |