Commune/Paroisse : Blois Saint Saturnin
| Patronymes | Périodes | Intervenant 1 | Intervenant 2 | |
|---|---|---|---|---|
| 1. | OBTERRE | 1614 | - | 1 |
| 2. | OCQUIT | 1744 | - | 1 |
| 3. | ODOUIN | 1673 | - | 1 |
| 4. | OILLEAUX DESORMEAUX | 1760 | - | 1 |
| 5. | OLINIER | 1611-1620 | 1 | 1 |
| 6. | OLIVIER | 1624-1724 | 2 | - |
| 7. | OLIVRY | 1764 | - | 1 |
| 8. | OMBREDANE | 1739 | - | 1 |
| 9. | OMBREDASNE | 1736 | - | 1 |
| 10. | ONDET | 1763 | 1 | - |
| 11. | ORCHAIRE | 1664 | - | 1 |
| 12. | ORCHERE | 1659-1668 | - | 2 |
| 13. | ORCHESE | 1672 | - | 1 |
| 14. | ORGEAU | 1619 | 1 | - |
| 15. | ORGEOU | 1624-1662 | - | 3 |
| 16. | ORILLARD | 1707 | - | 1 |
| 17. | ORILLON | 1792 | 1 | - |
| 18. | ORIOUR | 1625 | 1 | - |
| 19. | ORLEANS (D') | 1676-1743 | 1 | 1 |
| 20. | ORLÉANS (D') | 1745 | 1 | - |
| 21. | ORMEAU | 1646 | 1 | - |
| 22. | ORON (D') | 1785 | - | 1 |
| 23. | OUDÉE | 1663 | 1 | - |
| 24. | OUDIN | 1650-1790 | 1 | 2 |
| 25. | OUDINE | 1688-1760 | 1 | 1 |
| 26. | OUDINET | 1607 | - | 1 |
| 27. | OUDION | 1779 | 1 | - |
| 28. | OURRY | 1764 | 1 | - |
| 29. | OURY | 1609-1718 | 5 | 2 |
| 30. | OYER | 1703 | - | 1 |
| 31. | OZEST | 1767 | - | 1 |
| 32. | OZEUZE | 1641 | - | 1 |