Theodosia Bartow Prevost (November 1746 – May 18, 1794), also known as Theodosia Bartow Burr, was an American patriot.
Raised by a single mother, she married a British Army officer, Jacques Marcus Prevost, at age seventeen.
After the American Revolution began, her own Patriot leanings led her to offer the use of her house, the Hermitage, as a meeting- and resting-place for revolutionaries, including Alexander Hamilton, the Marquis de Lafayette, and Aaron Burr.
It was briefly used as the headquarters of George Washington, who counted her amongst his friends.
Burr's visit to the Hermitage began a secret romance that, following the death of Prevost's first husband, led to marriage.
The couple moved to New York City due to Burr's legal practice, and she acted as a crucial ally and confidante as he began his political career.
She was known for her wit, unusually deep education and intellectual acuity; her death in 1794 left Burr without "his best ally in the political wars to come".