| 1840 FERGUSON Index | ||||
| Last | First | Census | Location | Census |
| Name | Name | State | (County; Town) | Year |
| Forgison | Joseph | OH | Adams; Monroe | 1840 |
| Furgason | Robert | OH | Ashtabula; Harpersfield | 1840 |
| Furgeson | Henry | OH | Athens; Waterloo | 1840 |
| Furgason | Hugh | OH | Belmont; Bridgeport | 1840 |
| Ferguson | Hugh | OH | Belmont; Union | 1840 |
| Fergason | Ann | OH | Brown; Lewis | 1840 |
| Ferguson | Robert | OH | Butler; Hanover | 1840 |
| Ferguson | William | OH | Butler; Liberty | 1840 |
| Ferguson | John | OH | Butler; Oxford | 1840 |
| Ferguson | John | OH | Butler; Reiley | 1840 |
| Ferguson | John | OH | Butler; Reiley | 1840 |
| Ferguson | William | OH | Butler; Ross | 1840 |
| Furgason | Resin | OH | Champaign; Goshen | 1840 |
| Fergason | David | OH | Clark; Enon | 1840 |
| Fergeson | John | OH | Clark; Green | 1840 |
| Furgason | Benjamin | OH | Clark; Pleasant | 1840 |
| Furgason | Jossep | OH | Clark; Pleasant | 1840 |
| Furgason | Samuel | OH | Clark; Pleasant | 1840 |
| Furgason | William | OH | Clark; Pleasant | 1840 |
| Ferguson | John | OH | Clermont; Jackson | 1840 |
| Ferguson | Hugh | OH | Clermont; Monroe | 1840 |
| Ferguson | James | OH | Clermont; Monroe | 1840 |
| Ferguson | Charles | OH | Clermont; New Richmond | 1840 |
| Ferguson | Isaiah | OH | Clermont; Ohio | 1840 |
| Ferguson | Ish | OH | Clermont; Ohio | 1840 |
| Ferguson | Squire | OH | Clermont; Ohio | 1840 |
| Furguson | Charles | OH | Clinton; Liberty | 1840 |
| Furguson | Samuel | OH | Clinton; Liberty | 1840 |
| Furguson | Drurah | OH | Clinton; Richland | 1840 |
| Forgerson | Josiah | OH | Clinton; Richland | 1840 |
| Forgerson | Sidney | OH | Clinton; Richland | 1840 |
| Furgerson | William | OH | Clinton; Richland | 1840 |
| Ferguson | Saml | OH | Columbiana; Centre | 1840 |
| Ferguson | Saml | OH | Columbiana; Elkrun | 1840 |
| Ferguson | Wm | OH | Columbiana; Elkrun | 1840 |
| Ferguson | Hugh | OH | Columbiana; Hanover | 1840 |
| Ferguson | John | OH | Columbiana; Knox | 1840 |
| Ferguson | Thomas | OH | Columbiana; Knox | 1840 |
| Ferguson | Jonathan | OH | Columbiana; Middleton | 1840 |
| Ferguson | Moses | OH | Columbiana; Salem | 1840 |
| Ferguson | Anthony | OH | Columbiana; St Clair | 1840 |
| Ferguson | Wm | OH | Columbiana; St Clair | 1840 |
| Ferguson | Rachel | OH | Columbiana; Wayne | 1840 |
| Furgeson | Andrew | OH | Coshocton; Lafayette | 1840 |
| Fergeson | Mathew | OH | Coshocton; Roscoe | 1840 |
| Furgeson | John | OH | Coshocton; Washington | 1840 |
| Furgeson | Richard | OH | Coshocton; Washington | 1840 |
| Ferguson | James | OH | Crawford; Lykens | 1840 |
| Furgason | ?? | OH | Cuyahoga; Cleveland Ward 2 | 1840 |
| Furguson | Wm | OH | Cuyahoga; Mayfield | 1840 |
| Furgason | Elisha | OH | Darke; Twin | 1840 |
| Ferguson | James | OH | Delaware; Brown | 1840 |
| Ferguson | William | OH | Delaware; Brown | 1840 |
| Ferguson | Barbara | OH | Delaware; Delaware | 1840 |
| Ferguson | Robert | OH | Delaware; Kingston | 1840 |
| Furgerson | William C | OH | Erie; Huron | 1840 |
| Furgason | James | OH | Fairfield; Lancaster | 1840 |
| Furgason | W T | OH | Fairfield; Lancaster | 1840 |
| Furgason | J | OH | Franklin; Hamilton | 1840 |
| Furgason | R | OH | Franklin; Perry | 1840 |
| Furgason | James | OH | Franklin; Pleasant | 1840 |
| Furgason | W | OH | Franklin; Pleasant | 1840 |
| Ferguson | James | OH | Franklin; Truro | 1840 |
| Furgison | John L | OH | Geauga; Chester | 1840 |
| Furgason | Clark | OH | Greene; Beaver Creek | 1840 |
| Ferguson | Christopher | OH | Greene; no twp listed | 1840 |
| Ferguson | Lemon | OH | Greene; no twp listed | 1840 |
| Ferguson | Thomas | OH | Greene; no twp listed | 1840 |
| Ferguson | William | OH | Greene; no twp listed | 1840 |
| Ferguson | William | OH | Greene; no twp listed | 1840 |
| Furgeson | A | OH | Greene; Silver Creek | 1840 |
| Furgason | G | OH | Greene; Xenia | 1840 |
| Ferguson | William | OH | Guernsey; Cambridge | 1840 |
| Ferguson | James | OH | Guernsey; Knox | 1840 |
| Ferguson | William | OH | Guernsey; Madison | 1840 |
| Ferguson | Thomas | OH | Guernsey; Oxford | 1840 |
| Ferguson | Christopher | OH | Guernsey; Wills | 1840 |
| Ferguson | Lemon | OH | Guernsey; Wills | 1840 |
| Ferguson | Alexander | OH | Hamilton; Cincinnati Ward 2 | 1840 |
| Ferguson | John | OH | Hamilton; Cincinnati Ward 2 | 1840 |
| Ferguson | Robert | OH | Hamilton; Cincinnati Ward 2 | 1840 |
| Ferguson | William | OH | Hamilton; Cincinnati Ward 2 | 1840 |
| Ferguson | Hugh | OH | Hamilton; Cincinnati Ward 3 | 1840 |
| Ferguson | William | OH | Hamilton; Cincinnati Ward 3 | 1840 |
| Ferguson | George | OH | Hamilton; Cincinnati Ward 4 | 1840 |
| Ferguson | Spear | OH | Hamilton; Cincinnati Ward 4 | 1840 |
| Ferguson | James | OH | Hamilton; Cincinnati Ward 5 | 1840 |
| Ferguson | Anthony | OH | Hamilton; Columbia | 1840 |
| Ferguson | Jacob H | OH | Hamilton; Columbia | 1840 |
| Ferguson | Lucy | OH | Hamilton; Columbia | 1840 |
| Furguson | Wm B | OH | Hamilton; Columbia | 1840 |
| Furguson | James W | OH | Hamilton; Fulton | 1840 |
| Furguson | Jane | OH | Hamilton; Millcreek | 1840 |
| Furguson | Nathaniel | OH | Hamilton; Millcreek | 1840 |
| Furguson | Thos | OH | Hamilton; Springfield | 1840 |
| Ferguson | Charlotte | OH | Hamilton; Sycamore | 1840 |
| Forgason | William | OH | Hardin; Kenton | 1840 |
| Ferguson | Malcom | OH | Harrison; Athens | 1840 |
| Ferguson | Reason | OH | Harrison; Freeport | 1840 |
| Ferguson | Henry | OH | Harrison; Green | 1840 |
| Ferguson | Joseph | OH | Harrison; Green | 1840 |
| Ferguson | Benjamin | OH | Harrison; Moorefield | 1840 |
| Ferguson | Vincent | OH | Harrison; New Jefferson | 1840 |
| Forguson | Benjamin P | OH | Harrison; Washington | 1840 |
| Ferguson | David | OH | Highland; Clay | 1840 |
| Ferguson | Eli | OH | Highland; Clay | 1840 |
| Furguson | Peter | OH | Highland; Jackson | 1840 |
| Ferguson | William | OH | Highland; Paint | 1840 |
| Ferguson | Robert | OH | Hocking; Logan Falls | 1840 |
| Ferguson | Robert | OH | Hocking; Washington | 1840 |
| Fogerson | Wm | OH | Huron; Fitch | 1840 |
| Forgerson | Emily | OH | Huron; Greenwich | 1840 |
| Furguson | Wm J | OH | Jackson; Franklin | 1840 |
| Farguson | Thos | OH | Jefferson; Island Creek | 1840 |
| Farguson | Nancy | OH | Jefferson; Saline | 1840 |
| Ferguson | Fergus | OH | Jefferson; Steuben | 1840 |
| Ferguson | William | OH | Jefferson; Steuben | 1840 |
| Ferguson | Isaac | OH | Jefferson; Wayne | 1840 |
| Ferguson | James | OH | Jefferson; Wayne | 1840 |
| Ferguson | William | OH | Jefferson; Wayne | 1840 |
| Fergason | John | OH | Knox; Jackson | 1840 |
| Ferguson | James | OH | Knox; Martinsburg | 1840 |
| Fergerson | Finley | OH | Lake; Willoughby | 1840 |
| Ferguson | Hezekiah | OH | Lake; Willoughby | 1840 |
| Fergerson | John | OH | Lake; Willoughby | 1840 |
| Furgeson | John | OH | Lake; Willoughby | 1840 |
| Fergueson | Thomas | OH | Lake; Willoughby | 1840 |
| Ferguson | Abraham | OH | Lawrence; Fayette | 1840 |
| Ferguson | Edmund | OH | Lawrence; Fayette | 1840 |
| Fergusson | Saml | OH | Lawrence; Upper | 1840 |
| Ferguson | Joseph | OH | Lawrence; Windsor | 1840 |
| Furguson | Edward | OH | Licking; Bowling Green | 1840 |
| Ferguson | Peter | OH | Licking; Etna | 1840 |
| Ferguson | James | OH | Licking; Newark | 1840 |
| Ferguson | Shadrick | OH | Licking; Newark | 1840 |
| Furgason | John T | OH | Logan; Lake | 1840 |
| Ferguson | Jesse B | OH | Logan; Lane | 1840 |
| Fergason | Thomas | OH | Logan; Mc Arthur | 1840 |
| Fergason | Thos | OH | Logan; Mc Arthur | 1840 |
| Fergason | Alexander | OH | Logan; Rush Creek | 1840 |
| Furgason | John A | OH | Lorain; Eaton | 1840 |
| Ferguson | Michael | OH | Lucas; Clinton | 1840 |
| Ferguson | Henry | OH | Lucas; Water | 1840 |
| Ferguson | John | OH | Mercer; St Marys | 1840 |
| Furgoson | Isaac | OH | Mercer; Union | 1840 |
| Furgeson | John | OH | Miami; Lima | 1840 |
| Furguson | Elizabeth | OH | Miami; Newton | 1840 |
| Fergison | Robt | OH | Monroe; Malaga | 1840 |
| Furgison | John | OH | Monroe; Perry | 1840 |
| Furgusson | Aaron | OH | Montgomery; no twp listed | 1840 |
| Furguson | John | OH | Montgomery; no twp listed | 1840 |
| Furgason | William | OH | Montgomery; no twp listed | 1840 |
| Furguson | Washington | OH | Morgan; Meigs | 1840 |
| Furguson | Sarah | OH | Morgan; Penn | 1840 |
| Furguson | And | OH | Muskingum; Norwich | 1840 |
| Ferguson | Jos | OH | Muskingum; Union | 1840 |
| Ferguson | Mathias T | OH | Muskingum; Union | 1840 |
| Forgerson | Daniel | OH | Perry; Hopewell | 1840 |
| Furgurson | Patrick | OH | Perry; Pike | 1840 |
| Furgurson | Joseph | OH | Perry; Reading | 1840 |
| Furgurson | John | OH | Perry; Thorn | 1840 |
| Ferguson | William | OH | Pickaway; Circle | 1840 |
| Fergeson | John | OH | Pickaway; Monroe | 1840 |
| Ferguson | D R | OH | Pickaway; Perry | 1840 |
| Ferguson | Mathew | OH | Pickaway; Pickaway | 1840 |
| Ferguson | Mathew | OH | Pickaway; Pickaway | 1840 |
| Ferguson | William | OH | Pickaway; Pickaway | 1840 |
| Ferguson | David | OH | Pickaway; Walnut | 1840 |
| Ferguson | Jemima | OH | Pickaway; Wayne | 1840 |
| Ferguson | Johnna | OH | Pickaway; Wayne | 1840 |
| Ferguson | Joseph | OH | Pickaway; Wayne | 1840 |
| Fergerson | John | OH | Portage; Franklin | 1840 |
| Fergerson | Rufus | OH | Portage; Franklin | 1840 |
| Ferguson | Alva | OH | Portage; no twp listed | 1840 |
| Ferguson | Lucinda | OH | Portage; no twp listed | 1840 |
| Furguson | Reuben | OH | Portage; no twp listed | 1840 |
| Fergarson | James | OH | Portage; Streetsboro | 1840 |
| Fergerson | Samuel | OH | Portage; Suffield | 1840 |
| Ferguson | Sarah | OH | Preble; no twp listed | 1840 |
| Furgeson | Elijah | OH | Putnam; Richland | 1840 |
| Furgeson | Levi | OH | Putnam; Richland | 1840 |
| Forguson | Wm | OH | Richland; Clearcreek | 1840 |
| Forguson | James | OH | Richland; Franklin | 1840 |
| Forguson | Jane | OH | Richland; Franklin | 1840 |
| Forguson | John | OH | Richland; Franklin | 1840 |
| Forguson | Wm | OH | Richland; Franklin | 1840 |
| Furguson | Wm | OH | Richland; Hanover | 1840 |
| Furgerson | William | OH | Richland; Lexington | 1840 |
| Forguson | James | OH | Richland; Milton | 1840 |
| Forguson | James | OH | Richland; Milton | 1840 |
| Furguson | John | OH | Richland; Monroe | 1840 |
| Furguson | Joseph | OH | Richland; Monroe | 1840 |
| Furguson | Wm | OH | Richland; Monroe | 1840 |
| Furgason | Isaac | OH | Richland; Springfield | 1840 |
| Furgerson | Thomas | OH | Richland; Springfield | 1840 |
| Forguson | Saml | OH | Richland; Worthington | 1840 |
| Furguson | Joseph | OH | Ross; Paxton | 1840 |
| Furguson | Charles | OH | Ross; Union | 1840 |
| Furguson | Mary | OH | Ross; Union | 1840 |
| Ferguson | Carlin | OH | Sandusky; Rice | 1840 |
| Furgison | Sidney | OH | Sandusky; Sandusky | 1840 |
| Ferguson | Hugh | OH | Sandusky; Washington | 1840 |
| Furgison | Joseph | OH | Summit; Bath | 1840 |
| Furguson | Silas | OH | Summit; Boston | 1840 |
| Ferguson | Robert | OH | Summit; Tallmadge | 1840 |
| Ferguson | Dan | OH | Trumbull; no twp listed | 1840 |
| Ferguson | James | OH | Trumbull; no twp listed | 1840 |
| Ferguson | James | OH | Trumbull; no twp listed | 1840 |
| Ferguson | Saml | OH | Trumbull; no twp listed | 1840 |
| Ferguson | Samuel H | OH | Trumbull; no twp listed | 1840 |
| Forguson | Sanuel | OH | Trumbull; no twp listed | 1840 |
| Ferguson | James | OH | Tuscarawas; Warren | 1840 |
| Ferguson | John | OH | Tuscarawas; Warren | 1840 |
| Ferguson | Elizabeth | OH | Warren; Washington | 1840 |
| Ferguson | Feris | OH | Warren; Washington | 1840 |
| Ferguson | Feris | OH | Warren; Washington | 1840 |
| Fergison | Henry | OH | Warren; Wayne | 1840 |
| Forguson | James | OH | Washington; Barlow | 1840 |
| Forguson | James | OH | Washington; Marietta Ward 1 | 1840 |
| Furgerson | Grace | OH | Washington; Newport | 1840 |
| Furgerson | James | OH | Washington; Newport | 1840 |
| Furgason | Saml | OH | Wayne; Baughman | 1840 |
| Furgason | Walter | OH | Wayne; Congress | 1840 |
| Furgason | Thomas | OH | Wayne; Green | 1840 |
| Fargason | Joseph | OH | Wayne; Mohocan | 1840 |
| Furgason | John | OH | Wayne; Perry | 1840 |
| Ferguson | Henry | OH | Williams; Superior | 1840 |