Henrietta Isabella Sommers (1750–1783) was the daughter of Humphrey Sommers, a successful building contractor in Charleston, South Carolina. She was married to John Dart (67.268.1). The costume in this portrait was probably based on a print, since it is unlikely that Mrs. Dart possessed an ermine-trimmed robe. Theus undoubtedly painted the face from life and the clothing in his studio, with a mezzotint before him.
Dart-Roper-Bryan family; Richard R. Bryan, John's Island, South Carolina, by 1953–1958; with James Arthur Williams, Savannah, Georgia, 1958; with Harry Arons, Ansonia, Connecticut, 1958; Edgar William and Bernice Chrysler Garbisch, Cambridge, Maryland, 1958–1967