This Thomas Mason died, aged 47, on September 18, 1800, at Lexington plantation house, the nearby residence of his brother George's widow and her second husband (and Mason's former school mate) George Graham. Richard Brent filled the remainder of his term in the
Virginia House of Delegates representing Prince William County. On October 8, 1800, the Prince William County Court accepted an inventory of Thomas's estate, including enslaved persons, performed by future delegate George Graham and others. Thomas Mason's family continued to own the 500-acre Woodbridge plantation and bridge until 1851, when it was auctioned off following Gerard Alexander Mason's death. Gerard Mason was known as a harsh master, perhaps embodying his famous grandfather's aphorism, "Every Master is born a petty tyrant". He frequently advertised for runaway slaves with visible signs of physical injury, but had been acquitted in 1846 of murdering an enslaved woman named Katy whom he had stomped to death and buried months after beating her so severely that she could not walk. A neighbor found Gerard's (also sometimes spelled Jared's) corpse with head smashed by an axe in his own ferry house. Gerard had been killed by his slave Agnes, who was found guilty of murder and sentenced to death. Despite neighbors' petitions to the governor to commute her execution (to sale and transportation out of the state), on the grounds that Agnes had also been repeatedly abused, she was hanged. Many of his descendants would also share the name Thomas Mason. Thomas Mason's grandson, by his youngest son, Thomas Jr., Berry Mason lived in Charles County, Maryland until his death. His will dated July 13, 1852, probated in Maryland, specifically forbade any of his property (if he had no living children) even if his (also unmarried) brother Thomas Mason had children from passing in any contingency to any Hooe, Barron or Grymes. In 1817 this Thomas Mason's eldest daughter, Leannah, had married William Barron and bore Thomas Mason Barron in Washington D.C. before that family moved to Kentucky. Thomas M. Barron married Penelope McFarland in 1842, and the only son of their seven children, William Thomas Barron, married and eventually became the grandfather of the first wife of hotelier Conrad Hilton (Mary Barron). ==References==