this time in oil colors Princess Dorothea von Lieven (1785-1857). c.1820. Oil on canvas. And again She.... "Dorothea von Lieven Khristoforovna  (1785 - 1857), a Baltic German noblewoman and wife of Prince Khristofor Andreyevich Lieven , Russian ambassador to London , 1812 to 1834, was a political force in her own