Commune/Paroisse : Opheylissem [Brabant Wallon] 
| Patronymes | Périodes | Actes | |
|---|---|---|---|
| 1. | CAMAL | 1862 | 1 |
| 2. | CARLENS | 1837-1848 | 2 |
| 3. | CASTERS | 1897 | 1 |
| 4. | CESAR | 1886 | 1 |
| 5. | CHOISIS | 1886 | 1 |
| 6. | CLAES | 1766-1911 | 12 |
| 7. | CLAUDE | 1802 | 1 |
| 8. | CLOES | 1784-1900 | 8 |
| 9. | CLOOTS | 1794-1848 | 2 |
| 10. | CLOQUET | 1860-1902 | 3 |
| 11. | CLOSSE | 1820-1907 | 3 |
| 12. | COLLIN | 1810-1833 | 2 |
| 13. | COLLON | 1751-1871 | 10 |
| 14. | COLON | 1809 | 1 |
| 15. | CONNART | 1745-1902 | 10 |
| 16. | CORROY | 1847-1911 | 6 |
| 17. | CORTHAUTS | 1869 | 1 |
| 18. | CORTHOUTS | 1813 | 1 |
| 19. | COSSE | 1755 | 1 |
| 20. | CRAB | 1879 | 1 |
| 21. | CRETON | 1904 | 1 |