William Farrar III (c.1658 - 1721) was a Virginia planter and politician who represented Henrico County in the House of Burgesses during the 1700-1702 term.
The eldest son of William Farrar Jr. and his wife Mary, was under legal age, when his father died in 1676, and his uncle John appears to have operated plantations which his father had bequeathed to his sons, particularly on Farrar's Island in Henrico County, which he bequeathed to this man and his brothers when he died in 1685.
[1] He died in early 1721, with his widow Mary named to administer his estate, and his second son Abell sued later that year for debts owed to Henry Woodcokce.
William Farrar IV moved to Goochland County, which was officially formed that year in the area where his uncle Thomas was already living.
In modern times, Farrar's Island is part of the Dutch Gap Conservation Area and Henricus Historical Park, both administered by Chesterfield County, Virginia.