Isabella Poyntz (1803-1879), was the daughter and heiress of William Stephen Poyntz of Cowdray. She married Brownlow, 2nd Marquess of Exeter KG (1795-1867) in 1824. Her eventual inheritance would greatly enrich and enhance the Collection at Burghley with many wonderful works of art. The miniature, in a gilt-metal mount and ormolu frame, surmounted by a marquess’s coronet, is signed and dated 1830.
Sir William John Newton (1785-1869), one of the most fashionable miniaturists of the early 19th Century, was appointed miniature painter to Queen Victoria on her accession in 1837.