General Thomas Posey: Revolutionary War Hero and Governor of Indiana Territory
Editor’s Note
While researching the years leading up to the Civil War, I kept running across the name Thomas Posey.
At first, he seemed like just another early frontier politician connected to Indiana history. But the deeper I looked, the more I realized Posey’s life stretched across some of the most important periods of early American history.
He fought in the American Revolution, stood at Yorktown during the British surrender, became a political leader in Kentucky, served in the United States Senate, governed the Indiana Territory, and became involved in the growing national arguments over slavery and western expansion.
His story also connects directly to places throughout Indiana, Kentucky, and Illinois that still exist today.
Like many early American figures, Thomas Posey’s legacy is complicated.
He was both a Revolutionary War hero and a political leader caught in the growing divide over slavery in the western territories.
![By John Bayless Hill& James Peale - It is taken from an oil portrait by artist[1] John Bayless Hill (1849 - 1874), who based it on a miniature painted in 1795 by James Peale (1749 - 1831). The original digital version of the image may be viewed at:[2], Public Domain, https://commons.wikimedia.org/w/index.php?curid=20255761](https://www.oldfolksadventures.com/wp-content/uploads/2026/05/Thomas_Posey_Portrait.jpg)
Early Life of Thomas Posey (1750–1774)
Thomas Posey was born on July 9, 1750, in Virginia near the estate of George Washington at Mount Vernon.
Posey was legally the son of Captain John Posey and Elizabeth Lloyd, but throughout much of his life rumors circulated that he may have been the illegitimate son of George Washington.
The rumors were fueled by Posey’s physical resemblance to Washington and the support Washington later showed him throughout his military and political career.
Modern historians generally dismiss the theory, pointing out that Washington likely could not father children and that the relationship was more likely based on friendship and mentorship between neighboring families.
Still, the rumors followed Posey for much of his life.
Thomas Posey in the Revolutionary War
When the American Revolution began, Posey quickly entered military service and rose through the ranks of the Continental Army.
Military Service During the American Revolution
Throughout the war, Posey served in several major campaigns:
- Captain in the 7th Virginia Regiment
- Major serving alongside Morgan’s Riflemen
- Lieutenant Colonel of the 4th Virginia Regiment
Posey fought during the Saratoga Campaign and later took part in one of the most important moments of the Revolution — the British surrender at Yorktown in 1781.
The Battle of Yorktown
The surrender at Siege of Yorktown effectively ended major fighting during the American Revolution.
Being present at Yorktown placed Posey among many of the important military leaders who helped secure American independence.
His Revolutionary War service would later open doors for him politically across the expanding American frontier.
Thomas Posey Moves to Kentucky
Following the Revolution, Posey moved westward into Kentucky after receiving a massive military land grant totaling nearly 7,000 acres near present-day Henderson County.
He named his estate “Longview.”
At the time, Kentucky was still part of the growing western frontier, and Revolutionary War veterans were often rewarded with western land grants as payment for military service.
Thomas Posey in Kentucky Politics
Posey quickly became involved in Kentucky politics and government.
Kentucky State Senator
Shortly after arriving in Kentucky in 1802, Posey was elected to the Kentucky State Senate.
His military reputation made him a respected political figure, and he soon became Speaker of the Kentucky Senate during the 1805 and 1806 legislative sessions.
Lieutenant Governor of Kentucky
Posey later became Kentucky’s third Lieutenant Governor after the death of Lieutenant Governor John Caldwell.
At the time, serving as Speaker of the Senate placed Posey next in line for the office.
His rise showed how influential Revolutionary War veterans still were in early American politics.
Military Leadership Before the War of 1812
As tensions with Britain increased leading up to the War of 1812, Posey returned to military service.
By 1809, he held the rank of Major General in command of the Kentucky militia.
He was responsible for organizing thousands of Kentucky troops during a period when many Americans believed another war with Britain was likely.
Thomas Posey in Louisiana and the U.S. Senate
In 1810, Posey relocated again, this time to the Attakapas region of Louisiana.
His political career continued to grow.
In 1812, Posey was appointed to the United States Senate to fill a vacancy left by the resignation of John N. Destréhan.
Although his Senate service was relatively short, it added yet another major office to his already remarkable career.
Governor of Indiana Territory
In 1813, President James Madison appointed Thomas Posey as Governor of the Indiana Territory.
This would become one of the most controversial chapters of his life.
Thomas Posey and Slavery in Indiana Territory
At the time, Indiana Territory was rapidly growing and preparing for possible statehood.
But one major issue divided settlers:
Should slavery be allowed in the territory?
Posey’s Pro-Slavery Position
Like former territorial governor William Henry Harrison, Posey supported allowing slavery within Indiana Territory.
Supporters argued that slavery would attract wealthy Southern settlers and increase economic growth.
Posey also attempted to delay Indiana statehood, claiming the territory lacked the population and financial structure needed to support a state government.
Opponents believed the real reason was political.
Many anti-slavery settlers feared Posey hoped to delay the writing of a state constitution that would permanently ban slavery.
The Political Battle for Indiana
Posey faced growing opposition from anti-slavery political leaders led by Jonathan Jennings.
The conflict became one of the defining political struggles in early Indiana history.
When Indiana officially became a state in 1816, Posey lost the first gubernatorial election to Jennings.
The defeat marked the collapse of pro-slavery political influence within Indiana’s early government.
Why Posey County Was Named After Thomas Posey
Despite the political battles surrounding his governorship, Posey’s military reputation remained highly respected.
In 1814, Indiana Territory created Posey County and named it in his honor.
At the time, it was common for counties to be named after Revolutionary War officers, military leaders, and territorial officials.
Posey fit all three categories.
Today, Posey County still carries his name along the southwestern edge of Indiana near the Ohio River.
Final Years in Illinois
After losing the Indiana election, Posey accepted an appointment as an Indian Agent in Illinois Territory.
He moved to Shawneetown, Illinois, where he spent the final years of his life.
Thomas Posey died of typhus fever on March 19, 1818.
He was buried in Westwood Cemetery in Shawneetown.
According to local history, his grave was originally located in his daughter’s rose garden before the cemetery later developed around the burial site.
Final Thoughts
Thomas Posey’s life stretched across some of the most important chapters of early American history.
He fought during the American Revolution, stood at Yorktown during the birth of the nation, helped shape frontier Kentucky politics, served in the United States Senate, governed Indiana Territory, and became part of the growing national conflict over slavery and western expansion.
Few early American leaders held major offices across so many regions of the young United States:
- Virginia military officer
- Kentucky Lieutenant Governor
- U.S. Senator from Louisiana
- Governor of Indiana Territory
At the same time, his story also reflects the growing political divisions already forming in the western territories decades before the Civil War.
The deeper you look into early frontier history, the more you realize many of the arguments that later divided the country were already beginning to take shape long before 1861.
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