Anne Scott Jefferson, (October 1, 1755 - July 8, 1828) was Thomas Jefferson's youngest sister (a twin to Randolph Jefferson). She married Hastings Marks in October 1787. According to her great-niece Virginia Jefferson Randolph Trist, Anne and Hastings Marks had one son, Valentine, who married a "Miss Brockenborough of Port Royal." Valentine and his wife reportedly "left 2 daughters Sarah & Lizze Brockenborough (who lived in Port Royal) and a son Randolph." Researchers have discovered this information to be incorrect; Anne is not known to have had any children. (The Valentine mentioned is most likely Valentine Peyton, son of Craven Peyton and Jane Jefferson Lewis, who married Elizabeth Brockenbrough.) Ann (or Anna) Scott Marks (called "Aunt Marks" by Thomas Jefferson's children and grandchildren) came to live at Monticello with her brother after her husband's death in 1811; she died at Monticello in 1828. The location of her grave is not known.
- Kern, Susan. The Jeffersons at Shadwell. New Haven, Conn.: Yale University Press, 2010. Good background on the Jefferson family and the environment that Anne grew up in.
- PTJ. Contains references to Anne and letters between her and her brother.
- PTJ:RS. Contains references to Anne and letters between her and her brother (see the online index).
- MB. Contains records from Thomas Jefferson's financial accounts related to Anne.
- Thomas Jefferson Foundation. Family Letters Digital Archive. Contains letters between Anne and other Jefferson family members.
- 1. Her name also sometimes appears as "Anna."
- 2. Martha Jefferson Trist Burke to Jefferson Taylor, 15 July 1902. Thomas Jefferson Foundation, on deposit at the University of Virginia.
- 3. Sorley, Merrow Egerton, Lewis of Warner Hall: The History of a Family (Baltimore: Genealogical Publishing Co., 1991), 353.