Commune/Paroisse : Thônes [Haute-Savoie] 
| Patronymes | Périodes | Actes | |
|---|---|---|---|
| 1. | CUCU BALLON | 1867 | 1 |
| 2. | CUCU BALON | 1870 | 1 |
| 3. | CUCUBALLON | 1825 | 1 |
| 4. | CUCUBALON | 1896 | 1 |
| 5. | CUGNET | 1850-1858 | 3 |
| 6. | CUILLERI | 1818 | 1 |
| 7. | CUILLERIE | 1814 | 1 |
| 8. | CUILLERIER | 1871 | 1 |
| 9. | CUILLERY | 1815-1900 | 21 |
| 10. | CUNIT | 1896 | 1 |
| 11. | CUR CAVIN | 1838 | 1 |
| 12. | CURBIL | 1879 | 1 |
| 13. | CURDEL | 1597-1903 | 33 |
| 14. | CURDET | 1815 | 1 |
| 15. | CURT | 1832-1896 | 7 |
| 16. | CURT CAVENS | 1830-1901 | 15 |
| 17. | CURT CAVIN | 1844-1846 | 2 |
| 18. | CURTIL | 1833-1883 | 13 |