| 1840 FERGUSON Index | ||||
| Last | First | Census | Location | Census |
| Name | Name | State | (County; Town) | Year |
| Ferguson | Bradbury | ME | Cumberland; Portland Ward 7 | 1840 |
| Ferguson | Benj F | ME | Hancock; Deer Isle | 1840 |
| Furgerson | Henry W | ME | Kennebec; China | 1840 |
| Ferguson | Stepn | ME | Kennebec; Gardiner | 1840 |
| Ferguson | Edmund | ME | Penobscot; Dixmont | 1840 |
| Ferguson | Isaiah | ME | Penobscot; Dixmont | 1840 |
| Ferguson | Ivory | ME | Penobscot; Dixmont | 1840 |
| Ferguson | Jona | ME | Penobscot; Dixmont | 1840 |
| Ferguson | Reuben | ME | Penobscot; Dixmont | 1840 |
| Fergurson | Oliver | ME | Penobscot; Hampden | 1840 |
| Furgison | Joab Y | ME | Penobscot; Orono | 1840 |
| Furgerson | Jane | ME | Waldo; Belfast | 1840 |
| Furgerson | Moses W | ME | Waldo; Belfast | 1840 |
| Furguson | Alexander | ME | Waldo; Jackson | 1840 |
| Furguson | Reuben | ME | Waldo; Jackson | 1840 |
| Fergurson | Nahum | ME | Waldo; Troy | 1840 |
| Fergerson | Wm | ME | Waldo; Troy | 1840 |
| Furgason | James | ME | Washington; Robbinston | 1840 |
| Ferguson | Benja | ME | York; Alfred | 1840 |
| Ferguson | Daniel | ME | York; Alfred | 1840 |
| Ferguson | James | ME | York; Alfred | 1840 |
| Ferguson | James | ME | York; Alfred | 1840 |
| Ferguson | Dennis | ME | York; Eliot | 1840 |
| Ferguson | John | ME | York; Eliot | 1840 |
| Ferguson | Nathan | ME | York; Eliot | 1840 |
| Ferguson | Timothy | ME | York; Eliot | 1840 |
| Fogerson | Charles | ME | York; Hollis | 1840 |
| Ferguson | Benjamin | ME | York; Kittery | 1840 |
| Furguson | Elizabeth | ME | York; Saco | 1840 |
| Ferguson | James | ME | York; Shapleigh | 1840 |
| Ferguson | Nahum | ME | York; Shapleigh | 1840 |
| Ferguson | Nathaniel | ME | York; Shapleigh | 1840 |
| Ferguson | William | ME | York; Shapleigh | 1840 |
| Ferguson | Cyrus | ME | York; South Berwick | 1840 |
| Ferguson | Dennis | ME | York; South Berwick | 1840 |
| Ferguson | Eliza | ME | York; South Berwick | 1840 |
| Ferguson | John | ME | York; South Berwick | 1840 |
| Ferguson | Daniel | ME | York; Waterboro | 1840 |