lWiliam inherited his father’s homestead as provided in his father’s will, but he was disowned on February 6, 1782 for mustering with the militia. In 1786 he has 150 acres, three horses and four cattle. In 1799 he had 115 acres, three horses and five cattle. With his wife and seven children he started by wagon to Redstone, Fayette Co., PA on October 7, 1800.1615

William was a Revolutionary War veteran.417

Sometimes the surname is spelled Jeffries.1615

From History of Fayette County, Pennsylvania with Biographical Sketches of Many of Its Pioneers and Prominent Familes. Franklin Ellis, ed. Philadelphia: L. H. Everts, 1882.

p. 729
Griffith Roberts, of Chester County, with a family of four children, traveled westward over the mountains in company with William Jeffries and family about the year 1800. … Jeffries settled in Union township.