Commune/Paroisse : IZON [Gironde] 
| Patronymes | Périodes | Intervenant 1 | Intervenant 2 | |
|---|---|---|---|---|
| 1. | OLIVEAU | 1691-1795 | 2 | - |
| 2. | OLIVIER | 1917 | - | 1 |
| 3. | OLYVIER | 1663 | 1 | - |
| 4. | OMAN | 1664 | - | 1 |
| 5. | OMANT | 1687 | 1 | - |
| 6. | ORDONNEAU | 1780 | 1 | - |
| 7. | ORRE | 1713-1893 | 8 | 8 |
| 8. | OSEMERIE | 1701 | 1 | - |
| 9. | OSTENG | 1678 | 1 | - |
| 10. | OULLIE | 1932 | - | 1 |
| 11. | OUY | 1908 | 1 | - |
| 12. | OYASSON | 1854-1874 | 1 | 1 |
| 13. | OYHENQUI | 1920 | - | 1 |
| 14. | OZEMERIE | 1722 | - | 1 |
| 15. | OZEMERY | 1726 | - | 1 |