The Thweatt family tree has multiple connections to Thomas Jefferson. This page explores those connections. The primary characters who connect with each other are ...
Archibald Thweatt (1876-1956)
Lucy Eppes (1786-1860)
John Wayles (1715-1773)
Martha Wayles Jefferson (1748-1782)
Colonel Francis Eppes IV (1686-1734)
Here we see the connection between Archibald Thweatt (b.1876) and Lucy Eppes (GG Aunt of this Archibald). Lucy Eppes is the GGG Aunt of the 5 siblings Frances, Libby, Archie, Ann, and Margaret.
This graphic connects Lucy Eppes with Thomas and Martha Jefferson. Martha Jefferson is the daughter of John Wayles via his marriage to Martha Eppes. And Lucy Eppes is the granddaughter of John Wayles via his marriage to Mary (Tabitha) Cocke.
These two graphics connect Martha Jefferson and Lucy Eppes via a different family tie. Martha Jefferson's grandfather Colonel Francis Eppes IV is the also the great grandfather of Lucy Eppes.
Maria Jefferson (daughter of Thomas Jefferson) married John Wayles Eppes (brother of Lucy Eppes). This graphic shows the way in which Maria and John were kin to each other through John Wayles in addition to being husband and wife.
Maria and John were half first cousins since they shared a common grandfather in John Wayles.
Lucy Eppes and John Wayles Eppes were siblings. That means that their spouses were in-laws. Archibald Thweatt was the brother-in-law of Maria Jefferson, daughter of Thomas Jefferson.
Sally Hemings is also believed to have been a daughter of John Wayles. This would make Sally Hemings a half aunt of Lucy Eppes, wife of Archibald Thweatt.
This correspondence is a letter from Archibald Thweatt (1769-1844) to Thomas Jefferson. It is a request that Thomas Jefferson adopt some sort of amendments that were under consideration by the Virginia legislature. Thweatt suggests that with Jefferson's support the matter would easily sail through the legislature.
On January 28, 2018, the New York Times Review of Books carried a review of a new book by Mary Beth Norton with the title Jefferson’s Three Daughters — Two Free, One Enslaved. The following paragraph appears in the book review ...
The lives of four Virginia families — Jeffersons, Randolphs, Eppeses and Hemingses — were intertwined. Sally Hemings, daughter of Jefferson’s father-in-law by his mulatto slave Elizabeth Hemings, arrived in the Jefferson household in Paris in 1787 at the age of 14 assigned to be the child Maria’s companion. Following Hemings’s oral history, Kerrison relates how Sally, knowing she could claim freedom by remaining in France when Jefferson returned home in 1789, negotiated a promise of eventual freedom for herself and all her children, who were by parentage seven-eighths white — a promise kept in part by Martha Randolph after her father’s death in 1826. Jefferson listed Beverley, the oldest boy, born 1798, and his younger sister, Harriet, as “run” in 1822, but other sources reveal that he quietly facilitated their departure.
-- NY Times, Jan. 28, 2018
The Eppes family referenced in the above paragraph is the family of Lucy Eppes who married Archibald Thweatt. Lucy's brother John married Maria Jefferson. Sally Hemmings, the African-American daughter of Thomas Jefferson, is identified in the paragraph above as Maria's childhood companion in Paris in 1787 when Maria and Sally Hemmings were children. Martha (also mentioned in the paragraph above) is the older Jefferson daughter and the sister of Maria and half-sister of Sally.
As indicated in the above mentioned book review, the consensus now is that Sally Hemings is the daughter of John Wayles and his slave Elizabeth "Betty" Hemings. Since Martha Jefferson, wife of Thomas Jefferson, is also the daughter of John Wayles via his first marriage to Martha Eppes, this would mean that Martha Jefferson and Sally Hemings are half-sisters. And in addition both are half sisters to Elizabeth Wayles since she is also daughter of John Wayles via his marriage to Tabitha Cocke.
Martha Jefferson, Sally Hemings, and Elizabeth Wayles are all half-sisters.
Archibald Thweatt's mother-in-law, Elizabeth Wayles, was half-sister to both Martha Jefferson and Sally Hemings and brother-in-law to Thomas Jefferson.