James Henry Smith [d. 1907], New York; (sale, on the premises, American Art Association, New York, 18-22 January 1910, no. 10, as Lady Hertford by Lawrence, repro.); inherited by his nephew George G. Mason [1870-1955], Tuxedo Park, New York; by descent to G. Grant Mason, Jr., Arlington, Virginia; gift to NGA, 1968.
- European Paintings: An Illustrated Summary Catalogue. National Gallery of Art, Washington, 1975: 190, repro., as by Follower of Sir Thomas Lawrence.
- European Paintings: An Illustrated Catalogue. National Gallery of Art, Washington, 1985: 222, repro.
- Hayes, John. British Paintings of the Sixteenth through Nineteenth Centuries. The Collections of the National Gallery of Art Systematic Catalogue. Washington, D.C., 1992: 184-186, repro. 185.
The fine canvas is plain woven; it was lined in 1968. The ground is white. The painting is executed in rich, fluid layers, blended wet into wet, with the features, jewelry, and horizon crisply defined in distinct, unblended layers. The paint has been severely abraded during successive restorations, and the impasto was badly flattened during lining. There is heavy retouching, chiefly in the hair, the foliage above, and the landscape lower left; the back of the neck has been entirely reglazed. The face has not been retouched. The thick dammar varnish applied in 1968 has not discolored.