| 1800 FERGUSONs | ||||
| Last | Given | Census | Census | |
| Name | Name | State | Location | Year |
| Ferguson | Catharine | PA | Adams; Franklin | 1800 |
| Ferguson | Allen | PA | Adams; Hamiltons Bann | 1800 |
| Ferguson | Hugh | PA | Adams; Hamiltons Bann | 1800 |
| Ferguson | Hugh Sr | PA | Adams; Hamiltons Bann | 1800 |
| Ferguson | Richard | PA | Adams; Hamiltons Bann | 1800 |
| Ferguson | William | PA | Adams; Hamiltons Bann | 1800 |
| Ferguson | Wid | PA | Adams; Manallen | 1800 |
| Ferguson | Henry | PA | Adams; Mt Pleasant | 1800 |
| Fargusson | David | PA | Allegheny; Deer Twp | 1800 |
| Forgosson | Samuel | PA | Allegheny; Mifflin Twp | 1800 |
| Forgusson | Wilm | PA | Allegheny; Mifflin Twp | 1800 |
| Forgusson | John | PA | Allegheny; Moon Twp | 1800 |
| Forgosson | James | PA | Allegheny; Pine | 1800 |
| Forguson | Fargus | PA | Allegheny; Pittsburgh | 1800 |
| Ferguson | James | PA | Beaver; S Beaver Twp | 1800 |
| Ferguson | Benjamin | PA | Bedford; Providence & Coler | 1800 |
| Ferguson | Hugh | PA | Bedford; Providence & Coler | 1800 |
| Ferguson | John | PA | Bedford; Providence & Coler | 1800 |
| Ferguson | Joseph | PA | Bedford; Providence & Coler | 1800 |
| Ferg | John | PA | Berks; Douglas | 1800 |
| Ferguson | James | PA | Bucks; Plumstead Twp | 1800 |
| Ferguson | James | PA | Bucks; Plumstead Twp | 1800 |
| Furgason | James | PA | Butler; Buffalo Twp | 1800 |
| Furgason | Willm | PA | Butler; Buffalo Twp | 1800 |
| Furgason | Willm | PA | Butler; Slippery Rock Twp | 1800 |
| Ferguson | James | PA | Centre; Bald Eagle & Patto | 1800 |
| Ferguson | Thomas | PA | Centre; Bald Eagle & Patto | 1800 |
| Furgeson | Robt | PA | Chester; W Bradford | 1800 |
| Ferguson | Elizabeth | PA | Chester; W Caln | 1800 |
| Ferguson | Andrew | PA | Cumberland; E Pennsboro | 1800 |
| Ferguson | Thomas | PA | Cumberland; Newton | 1800 |
| Ferguson | William | PA | Cumberland; Newton | 1800 |
| Ferguson | Joseph | PA | Cumberland; Shippensburg | 1800 |
| Ferguson | William | PA | Cumberland; W Pennsboro | 1800 |
| Ferguson | Esther | PA | Dauphin; Lower Paxton Twp | 1800 |
| Ferguson | David | PA | Dauphin; W Hanover Twp | 1800 |
| Ferguson | John | PA | Dauphin; W Hanover Twp | 1800 |
| Forgison | Thomas | PA | Fayette; Bullskin Twp | 1800 |
| Forgison | James | PA | Fayette; Union Twp | 1800 |
| Fergeson | Mathew | PA | Franklin; Hamilton Twp | 1800 |
| Ferguson | Robert | PA | Greene; Franklin Twp | 1800 |
| Ferguson | George | PA | Greene; Richhill Twp | 1800 |
| Ferguson | John | PA | Huntingdon; Tyrone Twp | 1800 |
| Furgeson | John | PA | Lancaster; Bart | 1800 |
| Furgeson | Andrew | PA | Lancaster; Colerain Twp | 1800 |
| Furgeson | James | PA | Lancaster; Drumore Twp | 1800 |
| Forgison | Alexander | PA | Lancaster; Little Britain Twp | 1800 |
| Ferguson | John | PA | Lancaster; Rapho | 1800 |
| Furgeson | George | PA | Lancaster; Salisbury Twp | 1800 |
| Furgeson | Samuel | PA | Lancaster; Strasburg | 1800 |
| Ferguson | William | PA | Luzerne; Ulster Twp | 1800 |
| Forgison | John | PA | Mercer; No Twp Listed | 1800 |
| Ferguson | Wid | PA | Mifflin; Greenwood Twp | 1800 |
| Furguson | Wid | PA | Mifflin; Tamanagh Twp | 1800 |
| Furgeson | Archibald | PA | Mifflin; Wayne Twp | 1800 |
| Forgeson | John | PA | Northumberland; Turbotville | 1800 |
| Furgison | Samuel | PA | Philadelphia; Cedar Wd | 1800 |
| Fergason | Samuel | PA | Philadelphia; E Northern Liberti | 1800 |
| Ferguson | Andrew | PA | Philadelphia; E Northern Liberti | 1800 |
| Ferguson | Hugh | PA | Philadelphia; High Street Wd | 1800 |
| Ferguson | Benjn | PA | Philadelphia; Lower Delaware Wd | 1800 |
| Ferguson | Thos | PA | Philadelphia; Lower Delaware Wd | 1800 |
| Ferguson | John | PA | Philadelphia; North Wd | 1800 |
| Ferguson | Robt | PA | Philadelphia; North Wd | 1800 |
| Ferg | Henry | PA | Philadelphia; W Dist Southwark | 1800 |
| Ferguson | Ebenezer | PA | Philadelphia; W Dist Southwark | 1800 |
| Ferguson | Francis | PA | Philadelphia; W Dist Southwark | 1800 |
| Ferguson | Robert | PA | Philadelphia; W Dist Southwark | 1800 |
| Forgus | Thomas | PA | Washington; Chartiers | 1800 |
| Ferguson | Andrew | PA | Washington; Cross Crk Twp | 1800 |
| Ferguson | Robert | PA | Washington; Hopewell Twp | 1800 |
| Ferguson | James | PA | Washington; Nottingham Twp | 1800 |
| Ferguson | John | PA | Washington; Smiths | 1800 |
| Ferguson | William | PA | Washington; Smiths | 1800 |
| Ferguson | Mary | PA | Washington; Somerset Twp | 1800 |
| Ferguson | Robert | PA | Washington; Somerset Twp | 1800 |
| Ferguson | Samuel | PA | Washington; Somerset Twp | 1800 |
| Ferguson | William | PA | Washington; Somerset Twp | 1800 |
| Ferguson | William Jr | PA | Washington; Somerset Twp | 1800 |
| Feguson | Henry | PA | Washington; Straban | 1800 |
| Ferguson | James | PA | Westmoreland; Armstrong Twp | 1800 |
| Ferguson | James | PA | Westmoreland; Armstrong Twp | 1800 |
| Ferguson | Samuel | PA | Westmoreland; Armstrong Twp | 1800 |
| Ferguson | William | PA | Westmoreland; Armstrong Twp | 1800 |
| Ferguson | James 1 | PA | Westmoreland; Derry Twp | 1800 |
| Ferguson | James 2 | PA | Westmoreland; Derry Twp | 1800 |
| Ferguson | John | PA | Westmoreland; Derry Twp | 1800 |
| Ferguson | James | PA | Westmoreland; Salem Twp | 1800 |
| Ferguson | John | PA | Westmoreland; Salem Twp | 1800 |
| Ferguson | Thomas | PA | York; Monaghan | 1800 |