Commune/Paroisse : FLOIRAC [GIRONDE] 
| Patronymes | Périodes | Intervenant 1 | Intervenant 2 | |
|---|---|---|---|---|
| 1. | OHNENWALD | 1939 | 1 | - |
| 2. | OLIVER | 1931 | - | 1 |
| 3. | OLIVERO | 1923-1925 | 1 | 1 |
| 4. | OLIVET | 1841 | 2 | - |
| 5. | OLIVIER | 1930 | - | 1 |
| 6. | OMICIENSKI | 1932 | - | 1 |
| 7. | OMIECENSKI | 1899 | 1 | - |
| 8. | OMIECINSKI | 1931-1941 | - | 2 |
| 9. | ORDAX | 1934 | 1 | - |
| 10. | ORIAS | 1938 | 1 | - |
| 11. | ORIO | 1933 | 1 | - |
| 12. | ORMAZABAL | 1935 | 1 | - |
| 13. | ORNE | 1913 | 1 | - |
| 14. | ORNECH | 1932 | - | 1 |
| 15. | ORSONI | 1890-1906 | 2 | - |
| 16. | ORTIZ | 1882 | - | 1 |
| 17. | ORY | 1928 | 1 | - |
| 18. | OSSINS | 1919 | 1 | - |
| 19. | OSTANDIE | 1929 | 1 | - |
| 20. | OTHON | 1893-1923 | 1 | 2 |
| 21. | OUJAKINE | 1926 | 1 | - |
| 22. | OULIE | 1928 | 1 | - |
| 23. | OURICINSKI | 1886 | - | 1 |
| 24. | OUVERT | 1923 | 1 | - |
| 25. | OVERSTRACTEN | 1942 | - | 1 |
| 26. | OVESSIN | 1933 | 1 | - |
| 27. | OZERI | 1866 | - | 1 |
| 28. | OZERIE | 1878 | - | 1 |
| 29. | OZUN | 1933 | 1 | - |