Harriot Beauclerk, née Mellon, Duchess of St Albans, William Beechey, from 1817 until 1818
Harriot (mellon), duchess of st albans, by sir william beechey (died 1839). Object Type: painting. Genre: portrait. Date: from 1817 until 1818. Dimensions: height: 238.8 cm (94 in) ; width: 147.3 cm (57.9 in). Medium: oil on canvas. Depicted People: Harriot Beauclerk, Duchess of St Albans. Collection: National Portrait Gallery. Harriot (Mellon), Duchess of St Albans by Sir William Beechey