Commune/Paroisse : Ortho [Luxembourg]
| Patronymes | Périodes | Actes | |
|---|---|---|---|
| 1. | COIBION | 1819-1907 | 9 |
| 2. | COLAS | 1881 | 1 |
| 3. | COLLA | 1801-1872 | 7 |
| 4. | COLLARD | 1774-1904 | 27 |
| 5. | COLLAS | 1800-1892 | 20 |
| 6. | COLLET | 1902-1904 | 2 |
| 7. | COLLETTE | 1831-1881 | 14 |
| 8. | COLLIGNON | 1800-1884 | 17 |
| 9. | COLLIN | 1805-1888 | 9 |
| 10. | COLLINET | 1834-1910 | 13 |
| 11. | COPPE | 1817 | 1 |
| 12. | COPPINNE | 1851 | 1 |
| 13. | CORBAY | 1851-1899 | 5 |
| 14. | CORBUSIER | 1842-1892 | 2 |
| 15. | CORNET | 1832-1903 | 9 |
| 16. | CORNETTE | 1896 | 1 |
| 17. | COUGNET | 1866 | 1 |
| 18. | COULEE | 1873 | 1 |