The following, regarding Robert and Thomas Hill and their respective families, was extracted from the book, History of Washington County, Pennsylvania with Biographical Sketches of Many of Its Pioneers and Prominent Men (Boyd Crumrine, editor):
Robert and Thomas Hill came from Adams County, Pa., before 1781, and settled in Cecil township. Robert purchased two hundred acres of land now owned by Arthur Hooper. He lived to be over ninety years of age, and left three sons and six daughters, ---William, Amos, James, Ann, Sally, Betsey, Polly, Temperance, and Jane. William and Amos settled on the homestead. James went West. But two of the family never married, ---the oldest daughter and the youngest son. Thomas Hill purchased at sheriff's sale one hundred and fifty acres of what was known as the Rowley Patent. He married a daughter of William Hanna, who lived at that time in Allegheny County. In 1812 he built a log cabin on the site of the present residence of his son William. He died in 1824, and left two sons and four daughters. William was born in 1794, and now lives on the homestead. Thomas, the other son, was a carpenter and moved to Pittsburgh, where he still resides.
Crumrine, Boyd (ed.), History of Washington County, Pennsylvania with Biographical Sketches of Many of Its Pioneers and Prominent Men (Philadelphia: L. H. Everts & Company, 1882).