Mrs. Thornton (?-1865). Dr. Wm Thornton was the 1st Architect of the Capitol in Washington DC.  Mrs. Thornton was a well known socialite and was involved in a strange case involving a slave threatening her with an axe.
Painting exhibited in 1922 in the Union League in NYC.
<bdi><a href="https://en.wikipedia.org/wiki/en:Gilbert_Stuart" class="extiw" title="w:en:Gilbert Stuart"><span title="American portrait painter (1755-1828)">Gilbert Stuart</span></a>
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1804<div style="display: none;">date QS:P571,+1804-00-00T00:00:00Z/9</div>
<a rel="nofollow" class="external text" href="https://www.nga.gov/collection/art-object-page.1120.html">National Gallery of Art, Washington, D. C., online collection</a>