William Simpson Timeline
| c. 1780 | Savannah | Birth |
| 1801/10/12 | Mobile, AL | Simpson pays $800 in drafts on a real estate transaction on behalf of British firm Panton, Leslie & Company. |
| 1804/01/01 | Pascagoula, FL | John Lynd sells Simpson 40,000 arpents for $20,000. |
| 1804/01/01 | Mobile, AL | Antonio Espejo sells “The Place Chato” to William Simpson, partner of the House of Panton, for $500. |
| 1804/03/01 | Washington, AL | George Pollock appoints William Simpson as his attorney. |
| 1804/03/08 | Baton Rouge, LA | Charles Ramos conveys property to William Simpson and John Watkins. The property was originally a Spanish land grant made by Intendant Morales to Ramos. |
| 1805/08/08 | Spanish West FL | William Fawkener, Clerk to the British Privy Council, grants a license for James Innerarity and William Simpson to reside in West Florida. |
| 1807/02/28 | Baton Rouge, LA | William Simpson and John Lynd sell 2370 arpents to Zadok Brashears. |
| 1807/11/16 | Pensacola, FL | William Simpson to John Graham: Encloses a memorial of John Forbes and Co. for Thomas Jefferson. |
| 1808/11/24 | Spanish West FL | William Simpson petitions for seizure of the proceeds of the sale of coffee belonging to G.T. Phillips by William Harries. |
| 1810/02/24 | Baton Rouge, LA | Simpson gives power attorney to Rafael Crooker. With John Forbes. |
| 1811/11/05 | Mobile, AL | Forbes & Company sells land on Dauphin Island to William Simpson for $35,000. |
| 1812/07/09 | New Orleans, LA | Probate |
| 1812/10/04 | Madison, AL | Simpson is listed as a British alien residing in Madison County. |