What emperor of Austria was Stéphanie Windisch-Graetz descended from?
Stéphanie Windisch-Graetz: Stéphanie Windisch-Graetz (born 17 July 1939) is the daughter of Prince Franz Joseph zu Windisch-Graetz and granddaughter of Archduchess Elisabeth Marie of Austria. Stéphanie Windisch-Graetz:  Archduchess Elisabeth was the daughter of Rudolf, Crown Prince of Austria and granddaughter of Emperor Franz Joseph I of Austria.
i don't know