Dorothea Lieven
Princess Dorothea von Lieven , ne Benckendorff was a Baltic German noblewoman and wife of Prince Khristofor Andreyevich Lieven, Russian ambassador to London, 1812 to 1834. She was also an influential figure among many of the diplomatic, political, and social circles of 19thcentury Europe.
Dorothea von Benckendorff was born into Russias distinctive Baltic nobility to a Baltic German family in Riga in todays Latvia, daughter of General Baron Christoph von Benckendorff , who served as the military governor of Livonia, and wife Baroness Anna Juliane Charlotte Schilling von Canstatt , who held a high position at the Romanov Court as senior ladyinwaiting and best friend of Empress Maria Fyodorovna, and paternal granddaughter of Johann Michael von Benckendorff and wife Sophie von Lwenstern.
Source: Wikipedia