| 1800 FERGUSONs | ||||
| Last | Given | Census | Census | |
| Name | Name | State | Location | Year |
| Ferguson | Barbara | NY | Albany; Berne | 1800 |
| Ferguson | Lot | NY | Albany; Bethleham | 1800 |
| Ferguson | Henry | NY | Albany; Duanesburg | 1800 |
| Ferguson | John | NY | Albany; Duanesburg | 1800 |
| Ferguson | John | NY | Albany; Princetown | 1800 |
| Fergusen | Alexander | NY | Albany; Schenectady Ward 2 | 1800 |
| Ferguson | David | NY | Albany; Watervliet | 1800 |
| Fergerson | Stephen | NY | Columbia; Kinderhook | 1800 |
| Ferguson | John | NY | Delaware; Colchester | 1800 |
| Ferguson | Lewis | NY | Delaware; Colchester | 1800 |
| Ferguson | Daniel | NY | Delaware; Kortright | 1800 |
| Ferguson | James | NY | Delaware; Kortright | 1800 |
| Ferguson | James | NY | Delaware; Middletown | 1800 |
| Ferguson | James | NY | Delaware; Stamford | 1800 |
| Ferguson | Abraham | NY | Dutchess; Beekman | 1800 |
| Ferguson | Benjamin | NY | Dutchess; Beekman | 1800 |
| Ferguson | Mary | NY | Dutchess; Beekman | 1800 |
| Ferguson | Samuel | NY | Dutchess; Beekman | 1800 |
| Ferguson | Uriah | NY | Dutchess; Beekman | 1800 |
| Ferguson | Isaac | NY | Dutchess; Carmel | 1800 |
| Ferguson | John | NY | Dutchess; Carmel | 1800 |
| Ferguson | Thomas | NY | Dutchess; Carmel | 1800 |
| Ferguson | Michael | NY | Dutchess; Frederick | 1800 |
| Ferguson | John | NY | Dutchess; North East | 1800 |
| Ferguson | Abraham | NY | Dutchess; Phillips | 1800 |
| Ferguson | William | NY | Dutchess; Phillips | 1800 |
| Fogison | Franics | NY | Greene; Catskill | 1800 |
| Furguson | Benjamin | NY | Kings; Brooklyn | 1800 |
| Furguson | John | NY | Montgomery; Broadalbin | 1800 |
| Furguson | Joshua | NY | Montgomery; Broadalbin | 1800 |
| Forguson | Enos | NY | Montgomery; Charleston | 1800 |
| Ferguson | Samuel | NY | Montgomery; Johnstown | 1800 |
| Furgerson | John | NY | New York; 3-Wd New York City | 1800 |
| Furguson | Duncan | NY | New York; 3-Wd New York City | 1800 |
| Furguson | George | NY | New York; 3-Wd New York City | 1800 |
| Furguson | James | NY | New York; 3-Wd New York City | 1800 |
| Fargeson | David | NY | New York; 5-Wd New York City | 1800 |
| Furguson | Daniel | NY | New York; 5-Wd New York City | 1800 |
| Furguson | James | NY | New York; 5-Wd New York City | 1800 |
| Furguson | John | NY | New York; 5-Wd New York City | 1800 |
| Furguson | John | NY | New York; 5-Wd New York City | 1800 |
| Ferguson | John | NY | New York; 6-Wd New York City | 1800 |
| Ferguson | William | NY | New York; 6-Wd New York City | 1800 |
| Furguson | Ebenezer | NY | New York; 6-Wd New York City | 1800 |
| Furguson | James | NY | New York; 6-Wd New York City | 1800 |
| Furguson | Peter | NY | New York; 6-Wd New York City | 1800 |
| Furguson | Robert | NY | New York; 6-Wd New York City | 1800 |
| Furguson | Robert | NY | New York; 6-Wd New York City | 1800 |
| Forgus | James | NY | New York; New York Ward 2 | 1800 |
| Furgeson | John Mulat | NY | New York; New York Ward 7 | 1800 |
| Furguson | Benjamin Black | NY | New York; New York Ward 7 | 1800 |
| Furguson | William | NY | New York; New York Ward 7 | 1800 |
| Furguston | William | NY | New York; New York Ward 7 | 1800 |
| Ferguson | Jeams | NY | Oneida; Lisburn | 1800 |
| Ferguson | Samuel | NY | Oneida; Whitestown | 1800 |
| Furgeson | James | NY | Oneida; Whitestown | 1800 |
| Furgeson | Samuel | NY | Oneida; Whitestown | 1800 |
| Fergasson | Thomas | NY | Ontario; Seneca | 1800 |
| Ferguson | Aaron | NY | Orange; Minisink | 1800 |
| Ferguson | James | NY | Orange; Minisink | 1800 |
| Ferguson | John | NY | Orange; Minisink | 1800 |
| Ferguson | John | NY | Orange; Minisink | 1800 |
| Ferguson | Richard | NY | Orange; Minisink | 1800 |
| Ferguson | Samuel | NY | Orange; Minisink | 1800 |
| Ferguson | Uriah | NY | Orange; Minisink | 1800 |
| Ferguson | Alexander | NY | Orange; Montgomery | 1800 |
| Ferguson | John | NY | Orange; New Windsor | 1800 |
| Ferguson | William | NY | Orange; Warwick | 1800 |
| Ferguson | James | NY | Otsego; Cherry Valley | 1800 |
| Ferguson | James | NY | Otsego; Cherry Valley | 1800 |
| Ferguson | James | NY | Otsego; Cherry Valley | 1800 |
| Ferguson | James | NY | Otsego; Cherry Valley | 1800 |
| Ferguson | James | NY | Otsego; Cherry Valley | 1800 |
| Ferguson | James | NY | Otsego; Cherry Valley | 1800 |
| Ferguson | James | NY | Otsego; Otego | 1800 |
| Ferguson | Thomas | NY | Otsego; Otego | 1800 |
| Ferguson | William | NY | Otsego; Otego | 1800 |
| Ferguson | John | NY | Otsego; Springfield | 1800 |
| Ferguson | Robert | NY | Otsego; Springfield | 1800 |
| Ferguson | William | NY | Otsego; Springfield | 1800 |
| Forgason | Elijah | NY | Rensselaer; Greenbush | 1800 |
| Forgason | Leonard | NY | Rensselaer; Greenbush | 1800 |
| Forgason | Israel | NY | Rensselaer; Schodack | 1800 |
| Forgason | Jeremiah | NY | Rensselaer; Schodack | 1800 |
| Forgason | Jeremiah Jr | NY | Rensselaer; Schodack | 1800 |
| Forgason | Dunscum | NY | Saratoga; Galway | 1800 |
| Furgesson | William | NY | Saratoga; Greenfield | 1800 |
| Furgason | Peter | NY | Saratoga; Halfmoon | 1800 |
| Furgason | Roswell | NY | Saratoga; Halfmoon | 1800 |
| Furgerson | William | NY | Saratoga; Northumberland | 1800 |
| Fargeson | Jacob | NY | Saratoga; Saratoga | 1800 |
| Ferguson | Allen | NY | Saratoga; Stillwater | 1800 |
| Ferguson | James | NY | Schoharie; Cobleskill | 1800 |
| Ferguson | Bezaleel | NY | Ulster; New Paltz | 1800 |
| Ferguson | Gabriel | NY | Ulster; Platte Kill | 1800 |
| Ferguson | Peter | NY | Ulster; Shawangunk | 1800 |
| Ferguson | John | NY | Washington; Argyle | 1800 |
| Ferguson | John | NY | Washington; Cambridge | 1800 |
| Ferguson | Samuel | NY | Washington; Cambridge | 1800 |
| Fergason | Andrew | NY | Washington; Easton | 1800 |
| Ferguson | Samuel | NY | Washington; Hebron | 1800 |
| Forguson | Reuben | NY | Westchester; Bedford | 1800 |
| Forguson | Reuben | NY | Westchester; Bedford | 1800 |
| Forguson | William/Millison | NY | Westchester; Bedford | 1800 |
| Forguson | James | NY | Westchester; Cortlandt | 1800 |
| Forguson | Joel | NY | Westchester; Salem | 1800 |
| Forguson | John | NY | Westchester; Stephen and New Castle | 1800 |
| Forguson | Thomas | NY | Westchester; Stephen and New Castle | 1800 |
| Forguson | John | NY | Westchester; Westchester | 1800 |