Commune/Paroisse : Mas Grenier [Tarn-et-Garonne] 
| Patronymes | Périodes | Intervenant 1 | Intervenant 2 | |
|---|---|---|---|---|
| 1. | Badens | 1899 | 1 | - |
| 2. | Bages | 1796 | - | 1 |
| 3. | Baissiere | 1853 | - | 1 |
| 4. | Baissières | 1854 | 1 | - |
| 5. | Bal | 1844 | - | 1 |
| 6. | Balard | 1822 | - | 1 |
| 7. | Balat | 1796-1889 | 6 | 2 |
| 8. | Ballet | 1899 | 1 | - |
| 9. | Banzy | 1857 | - | 1 |
| 10. | Barbanse | 1809 | - | 1 |
| 11. | Barrau | 1893 | - | 1 |
| 12. | Barreau | 1832-1901 | 2 | 1 |
| 13. | Barrière | 1841-1898 | 2 | 1 |
| 14. | Barthe | 1800 | - | 1 |
| 15. | Barthouille | 1804 | - | 1 |
| 16. | Bartuet | 1903 | 1 | - |
| 17. | Basque | 1883-1887 | 1 | 2 |
| 18. | Bassoul | 1850 | 1 | - |
| 19. | Bayrou | 1902 | 1 | - |
| 20. | Bayssade | 1850-1873 | 2 | 1 |
| 21. | Bayssière | 1841 | - | 1 |
| 22. | Bayssières | 1858 | - | 1 |
