Richard Noble Thweatt (ca. 1780–1835), planter, killed a man in a duel in 1802, was summoned for jury service during Aaron Burr’s 1807 treason trial, and in 1809 married Mary “Polly” Eppes, a sister of TJ’s son-in-law John Wayles Eppes and niece of TJ’s wife, Martha Wayles Skelton Jefferson. President James Madison appointed Thweatt a federal tax assessor in 1816. He owned fifty-three slaves in Dinwiddie County in 1820 and sixty-five at his roughly 1,100-acre estate in Chesterfield County a decade later. Thweatt died in the latter county and was buried in the family cemetery at Eppington (John Frederick Dorman, ed., Ancestors and Descendants of Francis Epes I of Virginia [Epes-Eppes-Epps] [1992– ], 2:410; Alexandria Advertiser and Commercial Intelligencer, 6 Sept. 1802; David Robertson, Reports of the Trials of Colonel Aaron Burr [Philadelphia, 1808], 1:422; note to TJ to Archibald Thweatt, 13 Jan. 1810; JEP description begins Journal of the Executive Proceedings of the Senate of the United States description ends , 3:27, 29 [29 Jan., 9 Feb. 1816]; DNA: RG 29, CS, Dinwiddie Co., 1820, Chesterfield Co., 1830; Chesterfield Co. Will Book, 13:210–2; Richmond Enquirer, 19 May 1835; gravestone inscription in Eppington graveyard, Chesterfield County).

Bad weather delayed TJ’s departure for monticello until 6 Dec. 1816 (TJ to Martha Jefferson Randolph, 3 Dec. 1816; MB description begins James A. Bear Jr. and Lucia C. Stanton, eds., Jefferson’s Memorandum Books: Accounts, with Legal Records and Miscellany, 1767–1826, 1997, The Papers of Thomas Jefferson, Second Series description ends , 2:1329).