Henry Dickenson, 1750-1825, was the son of Henry and Agnes Dickenson. He came from Prince Edward County, Virginia and settled on the north side of the Clinch River near Castlewood in present day Russell County. With the increase of Indian hostilities, he moved his family inside the fort at Castlewood and later to the town of Abingdon. In 1774, with the outbreak of Dunmores war, Henry Dickenson enlisted in the frontier forces. He was among the roster of soldiers that fought at the Battle of Point Pleasant.
In December 1785, Henry Dickenson was among the signers of the petition to form Russell County. At the first court, of Russell County on May 9, 1786, he was appointed as Clerk of Courts. He held this position until his death in 1825. Henry donated the land that the first county courthouse was located. In 1788, he and Thomas Carter were the Russell County delegates to the Virginia Convention to ratify the first draft of the U. S. Constitution.
Henry Dickenson married Mary Powell 1751-1842. Henry and Mary had ten children as follows:
1. Elizabeth m. Nathan Ellington, deputy clerk of Russell Co.
2. Thomas m. Nancy Dickenson.
3. Mary m. Robert Duff. They moved to Lee Co., Va.
4. Martha m. Ezekial Burdine, a Methodist preacher.
5. William Powell died while young.
6. Henry married four times. A) Pricella Carroll, B) Elizabeth Bickley, C) Rebecca Gibson, D) Maria Phillips.
7. James Dickenson m. Mary Gray.
8. John died in infancy.
9. John (2nd) m. Fanny Robertson.
10. Robert m. Evaline Sargent.