From surveyor to military officer Preston began his public career in 1750 when he became clerk of the vestry of Augusta Parish, a post he would hold for 16 years. He would also lead troops in both the
French and Indian War and
American Revolutionary War, but his military career began a decade earlier as a diplomat and surveyor. In June 1752, William accompanied his uncle James Patton during negotiations to acquire land from native American tribes, and served as his secretary at the
Logstown Treaty Conference. Patton soon arranged for his nephew to be apprenticed to
Thomas Lewis, the surveyor the Augusta county surveyor and Patton's cousin, so in November 1752, William became a deputy surveyor. He later served as surveyor in Augusta,
Botetourt,
Fincastle, and
Montgomery Counties, in particular surveying 36 tracts for Patton along the
New River. Preston would later serve as county lieutenant for Fincastle County (much of which became Kentucky about a decade after this man's death) and Montgomery Counties (part of which later became West Virginia decades later), after the Virginia legislature further split Augusta County after the Botetourt County spinoff discussed below as its population continued to increase. Preston survived the
Draper's Meadow massacre, an attack by the
Shawnee against a settlement that was part of a property later known as
Smithfield Plantation, that he purchased in 1773. About a year later, Preston constructed his Smithfield Plantation home, which became his main residence. His journal is now the only complete record of that campaign. Preston was also responsible for erecting Fort William near one of the mountain passes to protect settlers, and in early October 1756 he accompanied George Washington from Augusta Court House to the James River at Col. John Buchanan's at Luney's Ferry during Washington's survey of the frontier before taking drafted militia to relieve the company at Millar's Fort in November. In 1757 and 1758, he commanded troops at Fort Prince George in the Bullpasture area, before being qualified as major of the Augusta County militia on November 17, 1758. Despite that rank, he was captain of a ranger company stationed at Fort Young in 1759, then commissioned lieutenant colonel of the militia on August 17, 1759. During
Lord Dunmore's War of 1773–1774, while fighting against the
Shawnee Indians, Preston urged Virginians to join the militia to enact revenge on the Indians and plunder their stock of horses. As the county lieutenant, one of Col. Preston's greatest contributions to the
American Revolutionary War was his ability to suppress the
Tories (British loyalists) from uprising in then-vast southwest Virginia during the Revolution. He also helped fight
Lord Cornwallis and the British in the Carolinas. In February 1759, Preston purchased 191 acres on Buffalo Creek near the headwaters of the James River which had a block house or fort surrounded by a stockade. It became the core of
Greenfield plantation where Preston moved his family by 1762. In August 1759, Preston traveled to
Nanjemoy, Maryland and purchased 16 enslaved Africans from the ship
True Blue for 752pounds (to avoid a 5% Virginia sales tax). Greenfield contained 1590 acres by 1765 and 2175 acres by the time of Preston's death, when it was one of Botetourt County's largest plantations. Preston may have arranged a second split before his departure, as Botetourt County split in 1772, with the area west of the New and Kanawha Rivers becoming Fincastle County, although the Botetourt County seat would remain at a new town created that year and named
Fincastle. In 1775, Preston was one of the signatories of the Fincastle Resolutions, one of the early resolves in the increasingly divisive relation with England. By 1775, some western Virginians had proposed splitting still-vast Fincastle county, and it disappeared in 1777, with the westernmost portion becoming
Kentucky County and the mountainous eastern half became still large
Montgomery County (from which southern West Virginia would later be formed) as well as
Washington County. Botetourt County would also be further split after Preston's political life ended, with the creation of
Rockbridge County (1778),
Bath County (1791, after this man's death),
Alleghany County (1822),
Roanoke County (1833), and
Craig County (1851). Preston served as a founding trustee of Liberty Hall (chartered in 1782), formerly named the
Augusta Academy, when in 1776 it was renamed in a burst of revolutionary fervor and moved to
Lexington, Virginia (shortly before the formation of Rockbridge County). Other founding trustees Preston worked with were prominent men in the area, including
Andrew Lewis,
Thomas Lewis,
Samuel McDowell,
Sampson Mathews, George Moffett, and
James Waddel. It is the ninth-oldest institution of higher education in the country. ==Death and legacy==