Princess Stephanie of Windisch-Graetz's mother was a member of what political party?
Archduchess Elisabeth Marie of Austria Archduchess Elisabeth Marie of Austria (Elisabeth Maria Henriette Stephanie Gisela; 2 September 1883 – 16 March 1963) was the only child of Rudolf, Crown Prince of Austria and Princess Stéphanie of Belgium, and a granddaughter of Emperor Franz Joseph I of Austria and King Leopold II of the Belgians. She was known to the family as "Erzsi", a diminutive of her name in Hungarian. Later nicknamed "The Red Archduchess", she was famous for becoming a socialist and a member of the Austrian Social Democratic Party.
Princess Florestine of Monaco Princess "Florestine" Gabrielle Antoinette of Monaco (Full French name: "Florestine Gabrielle Antoinette, Princesse de Monaco") (22 October 1833 in Fontenay-aux-Roses, Kingdom of the French – 4 April 1897 in Stuttgart, Kingdom of Württemberg) was the youngest child and only daughter of Florestan I, Prince of Monaco, and his wife Maria Caroline Gibert de Lametz. Florestine was a member of the House of Grimaldi and a Princess of Monaco by birth and a member of the House of Württemberg and Duchess consort of Urach and Countess of Württemberg through her marriage to Wilhelm, 1st Duke of Urach.