Commune/Paroisse : Massongy [Haute-Savoie] 
| Patronymes | Périodes | Actes | |
|---|---|---|---|
| 1. | COCHON | 1636 | 1 |
| 2. | COHANNIER | 1853 | 1 |
| 3. | COINIER | 1819-1823 | 3 |
| 4. | COLLET | 1731 | 1 |
| 5. | COLLOMB | 1798-1903 | 18 |
| 6. | COLLON | 1803 | 1 |
| 7. | COLLOND | 1789 | 1 |
| 8. | COLOMB | 1796 | 1 |
| 9. | COLON | 1730-1732 | 2 |
| 10. | CONFLENS | 1601 | 1 |
| 11. | COUDRAIS | 1772 | 1 |
| 12. | COUTY | 1828-1831 | 2 |