| 1820 FERGUSONs | ||||
| Last | Given | Census | Census | |
| Name | Name | State | Location | Year |
| Fergason | Nathaniel | CT | Fairfield; Ridgefield | 1820 |
| Fergason | William | CT | Fairfield; Ridgefield | 1820 |
| Furguson | Mary | CT | Hartford; East Hartford | 1820 |
| Furgerson | Samuel | CT | Litchfield; Canaan | 1820 |
| Furgerson | John | CT | Litchfield; New Milford | 1820 |
| Ferguson | Ann | CT | New London; New London | 1820 |
| Furgerson | John | CT | Tolland; Bolton | 1820 |
| Furgerson | Lucy | CT | Tolland; Bolton | 1820 |