Commune/Paroisse : Onnion [Haute-Savoie] 
| Patronymes | Périodes | Intervenant 1 | Intervenant 2 | |
|---|---|---|---|---|
| 1. | BABA | 1623-1663 | 2 | 2 |
| 2. | BABACT | 1695-1702 | 4 | 2 |
| 3. | BABAT | 1688 | - | 1 |
| 4. | BABAZ | 1631-1912 | 10 | 9 |
| 5. | BAISIN | 1893 | 1 | - |
| 6. | BALAT | 1794 | 1 | - |
| 7. | BALLY | 1803-1858 | 4 | 3 |
| 8. | BARRAT | 1860 | 1 | - |
| 9. | BASTARD | 1812-1919 | 11 | 2 |
| 10. | BASTIAN | 1821-1892 | 3 | 3 |
| 11. | BAUD | 1626-1896 | 5 | 6 |
| 12. | BAUD BERTHIER | 1813 | - | 1 |
| 13. | BAUD GRASSET | 1706 | - | 1 |
| 14. | BAUDET | 1864-1919 | 5 | 5 |
| 15. | BAUSSANT | 1872 | 1 | - |