| 1840 FERGUSON Index | ||||
| Last | First | Census | Location | Census |
| Name | Name | State | (County; Town) | Year |
| Ferguson | James | LA | Avoyelles; no twp listed | 1840 |
| Ferguson | Aron | LA | Caddo; no twp listed | 1840 |
| Ferguson | W | LA | Caddo; no twp listed | 1840 |
| Ferguson | Ezekiel | LA | East Baton Rouge; no twp listed | 1840 |
| Furguson | Moses | LA | East Baton Rouge; no twp listed | 1840 |
| Furguson | Wm | LA | East Baton Rouge; no twp listed | 1840 |
| Furguson | Catharine | LA | Madison; no twp listed | 1840 |
| Furgusson | Aaron | LA | Natchitoches; no twp listed | 1840 |
| Furgusson | William | LA | Natchitoches; no twp listed | 1840 |
| Ferguson | C | LA | Orleans; New Orleans Ward 1 | 1840 |
| Ferguson | Jno | LA | Orleans; New Orleans Ward 1 | 1840 |
| Ferguson | M | LA | Orleans; New Orleans Ward 1 | 1840 |
| Ferguson | Peter | LA | Orleans; New Orleans Ward 1 | 1840 |
| Ferguson | J Q | LA | Orleans; New Orleans Ward 2 | 1840 |
| Ferguson | ?? | LA | Orleans; New Orleans Ward 3 | 1840 |
| Fergerson | Turner P | LA | Ouachita; no twp listed | 1840 |
| Ferguson | ?? | LA | Rapides; no twp listed | 1840 |
| Fergurson | Elisha | LA | Saint Landry; no twp listed | 1840 |
| Fergurson | Ransom P | LA | Saint Landry; Washington | 1840 |
| Ferguson | James | LA | Saint Mary; no twp listed | 1840 |
| Furgason | John | LA | Union; no twp listed | 1840 |
| Ferguson | Robert | LA | West Feliciana; no twp listed | 1840 |