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.
Andrea von Habsburg Andrea von Habsburg ("Andrea Maria von Habsburg-Lothringen") Archduchess of Austria, Hereditary Countess of Neipperg, (born 30 May 1953, in Würzburg, Bavaria), is the first child and oldest daughter of Otto von Habsburg and his wife Princess Regina of Saxe-Meiningen.