Mildred Corbin Washington Lee (1760–1796)
Mildred Corbin Washington Lee was Bushrod Washington's older sister.
Mildred Corbin Washington was born at Bushfield, the second oldest child of John Augustine Washington and Hannah Bushrod Washington. In 1788 she married Thomas Jesse Lee, eldest son of Richard Henry Lee. They lived at Park Gate plantation in Prince William County and were the parents of at least one son. Mildred Corbin Washington Lee died at Park Gate on 8 September 1796.
Reginald Buchanan Henry, Genealogies of the Families of the Presidents (Rutland, VT: The Tuttle Company, 1935), 75.
Ethel Armes, Stratford Hall: The Great House of the Lees (Richmond: Garrett and Massie, 1936), 253.
"To George Washington from William Augustine Washington, 12 September 1796," Founders Online, National Archives, https://founders.archives.gov/documents/Washington/05-20-02-0425. [Original source: The Papers of George Washington, Presidential Series, vol. 20, 1 April–21 September 1796, ed. David R. Hoth and William M. Ferraro. Charlottesville: University of Virginia Press, 2019, pp. 682–683.]
Mildred Washington in Virginia Marriages before 1824 (Ancestry.com).
Mildred Washington Lee at Find a Grave.
Mildred Corbin Washington at FamilySearch.