Georgiana Cavendish, Duchess of Devonshire
Georgiana Cavendish, Duchess of Devonshire (née Spencer; jor-JAY-nə; 7 June 1757 – 30 March 1806), was an English aristocrat, socialite, political organiser, author, and activist. Born into the Spencer family and married into the Cavendish family, she was the first wife of William Cavendish, 5th Duke of Devonshire, and the mother of the 6th Duke of Devonshire.
Source: Wikipedia — Georgiana Cavendish, Duchess of Devonshire (CC BY-SA 4.0)