Commune/Paroisse : Bertrix [Luxembourg]
| Patronymes | Périodes | Actes | |
|---|---|---|---|
| 1. | FOCANT | 1948 | 1 |
| 2. | FOLLI | 1907 | 1 |
| 3. | FONTAINE | 1769-1950 | 50 |
| 4. | FONTENET | 1909 | 1 |
| 5. | FORET | 1792-1945 | 22 |
| 6. | FORÊT | 1802-1860 | 12 |
| 7. | FORGET | 1806-1941 | 2 |
| 8. | FORNIER | 1777 | 1 |
| 9. | FORTIER | 1892 | 1 |
| 10. | FORTINAIRE | 1759 | 2 |
| 11. | FOSSE | 1897-1903 | 4 |
| 12. | FOSSY | 1945 | 1 |
| 13. | FOULON | 1794-1947 | 41 |
| 14. | FOURIER | 1779 | 1 |
| 15. | FOURNY | 1950 | 1 |
| 16. | FOURY | 1900 | 1 |
| 17. | FOX | 1941 | 1 |