Dorothea Lieven

Princess Katharina Alexandra Dorothea von Lieven (, tr. ), née Freiin von Benckendorff, 17 December 1785 – 27 January 1857), was a Baltic German noblewoman and the wife of Prince Christoph Heinrich von Lieven, who served as the Russian ambassador to London between 1812 and 1834. She became an influential figure among many of the diplomatic, political, and social circles of 19th-century Europe. Provided by Wikipedia