John Witt, III was the son of John L. Witt, II and possibly Lavinia Ann Rogers. He was born in Goochland County, Virginia, and died after October 31, 1779 in Henry County, Virginia.

John Witt, III married Elizabeth _____, prior 1714 in Goochland County, Virginia. They had several children.

Charles (1714 - ) m2. Lavina Harbour
David ( - 1810) m. Sarah Harbour
Jesse ( - 1809) m. Martha Cheatham
John ( - ) m. Mary Bullington
Hannah (1725 - aft 1805) m. Charles Hulsey, Jr.
Elizabeth (1725 - 1810) m. Capt. Thomas Smith
Judith/Judah ( - ) m. John Matlock
Joyce ( - ) m. _____ Thornhill
Abner ( - )
Elijah (1736 - 1770) m. Jane Harbour
Mary Martha (abt 1737 - ) m. John Bullington

On September 17, 1731, John Witt "Jr." patented 400 acres south of the James River in Goochalnd County (later Powhatan County), Virginia, lying between the two Manakin Creeks and crossing Ditnoy’s Creek and a few miles south of his father's Tuckahoe Creek land [Virginia Patent Book 14, p333]. The 1732 and 1733 Goochland County tax lists show him in this area taxed for 3 tithes [Magazine of Virginia Genealogy, Volume 33, No.2 "Tithables of Goochland County"]. He was also listed as a tithable in the 1732, 1733, and 1734 vestry records for King William Parish [Vestry Book of King William Parish, Virginia 1707-1770, Manakin Huguenot Society, 1966, pp 70, 76, 78]. In the 1732 entires, he is listed as "John Watt, Junior Watt, 2 [tithes]" (probably he and his father), in 1733 as "John Wett, Wott, 2 [tithes]" (himself and possibly a 16 year old son or a slave), and in 1734 as "John Witt, 3 [tithes]" (himself only) [Virginia Tax Records, "The Magazine of History and Biography," 1983]. On 28 April 1734, John Witt and his wife Elizabeth, of King William Parish, sold the 1731 patent [Weisiger, Benjamin B., "Goochland County, Virginia Wills and Deeds, 1728-1736", Southern Historical Press, 1983, p51-52, which references Deed Book 1, p523-4], where Elizabeth signed here mark with a "P", possibly the initial of her maiden name. In 1741, he was appointed as the surveyor of the road from Jones Bridge to Fine Creek, south of the James River. No tax lists for that area of the county exist again until 1746, where two John Witts are found near Lickinghole Creek [Lurvey, A. Jean, "Goochland County Virginia Tithe Lists 1735-1747, 1974]. In 1748, a John Witt is found in the Tuckahoe area [Lurvey, A. Jean, "Goochland County Virginia Tithe Lists 1748-1749, 1979], which was not covered in the previous tax list. In 1751, he and his uncle, William, sold John Witt's portion of the land that John and William Witt purchased in 1751. Elizabeth also signed the deed. Their children John and Jesse Witt were witnesses, as well and William's son, John (signed "J" only). The last record of this John Witt in Goochland County, is in the 1752 tax records. Further occurances of a John Witt, are for his son, John Witt IV, i.e. 1758 [Goochland County Deed Book 7, p310]. In 1756 and 1757, two of his daughters, who were "of this parish", were married in St. James Northam Parish [Jones, William Macfarlane, ed., "The Douglas Register", Genealogical Publishing Co., reprint 1985]. This parish was located north of the James river.
John Witt apparently moved to Halifax County (a section which later became Pittsylvania, then Henry) along with some of his children. There were many John Witts in the area, nephews, &c., so it is difficult to sort out to which John Witt the records belong. However, in 1763, Thomas Harbour, his son's father-in-law, sold to a John and William Witt, his brother, 140 acres on Blackberry Creek [Halifax County Deed Book 4, p367]. In 1768, and 1769, this John Witt was refered to as John Witt, Jr. Then in 1773, Adjonijah Harbour sold land in a different part of the county, on Falls Creek to John Witt, Sr [Pittsylvania County Deed Book 3, p261]. In 1779, he gifted this land, which was apparently where he lived, to his sons [Henry County Deed Book 1, p228]. On October 31, 1779, he and his son John and brother William took the Oath of Allegance in Henry County, Virginia. There is no further record of him.