Caption:
Elisabeth Foster - Duchess of Devonshire - after a miniature by Richard Cosway. Elizabeth Cavendish, Duchess of Devonshire (formerly Elizabeth Hervey, later Lady Elizabeth Foster) (1759 - March 30, 1824), is best known as the close friend of Georgiana, Duchess of Devonshire, who supplanted the Duchess in her husband's affections and later married him. ©TopFoto