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.
Countess Georgina von Wilczek Georgine "Gina" von Wilczek (Georgine Norberte Johanna Franziska Antonie Marie Raphaela; 24 October 1921 – 18 October 1989) was the daughter and only child of Ferdinand Maria, Count of Wilczek (1893–1977), and his wife, Countess Norbertine Kinsky von Wchinitz und Tettau (1888–1923). She was born in Graz, and was the mother of Prince Hans-Adam II of Liechtenstein.