Naissances / baptêmes
Commune/Paroisse : Auray [56 - Morbihan] 
| Patronymes | Périodes | Actes | |
|---|---|---|---|
| 1. | COHELEACH | 2000 | 1 |
| 2. | COHÉLÉACH | 2000-5000 | 3 |
| 3. | COHO | 3000-8000 | 3 |
| 4. | COIEFFET | 7000 | 1 |
| 5. | COIFFEC | 9000 | 1 |
| 6. | COLLIGNON | 3000 | 1 |
| 7. | COLLO | 1793 | 1 |
| 8. | COLOMBEL | 1000-8000 | 7 |
| 9. | CONAN | 5000 | 1 |
| 10. | COPINCE | 6000 | 1 |
| 11. | COPPENS | 1000-5000 | 2 |
| 12. | COPPENSE | 3000 | 1 |
| 13. | COPPINCE | 8000 | 1 |
| 14. | COPPINS | 9000 | 1 |
| 15. | CORILLON | 9000 | 1 |
| 16. | CORLAY | 1000-7000 | 2 |
| 17. | CORLET | 1793 | 1 |
| 18. | CORMAT | 1793 | 1 |
| 19. | COSMAT | 1000-8000 | 3 |
| 20. | COSMATTE | 2000 | 1 |
| 21. | COUGOULIC | 1793-6000 | 3 |
| 22. | COULLO | 8000 | 1 |