| 1840 FERGUSON Index | ||||
| Last | First | Census | Location | Census |
| Name | Name | State | (County; Town) | Year |
| Fargeson | Thomas F | FL Terr. | Franklin; no twp listed | 1840 |
| Ferguson | Isaac | FL Terr. | Gadsden; no twp listed | 1840 |
| Ferguson | Neil | FL Terr. | Leon; no twp listed | 1840 |
| Furgerson | Richard | FL Terr. | Saint Johns; St Augustine | 1840 |
| Ferguson | Alexander | FL Terr. | Washington; no twp listed | 1840 |
| Ferguson | John | FL Terr. | Washington; no twp listed | 1840 |