Princess Stephanie of Windisch-Graetz, was the daughter of Prince Otto Weriand of Windisch-Graetz, and was the only child of Rudolf, Crown Prince of Austria and Princess Stéphanie of Belgium?
Princess Stephanie of Windisch-Graetz Princess Stéphanie of Windisch-Graetz (April 4, 1909 in Ploskovice, Bohemia – May 29, 2005 in Uccle, Belgium) was the daughter of Prince Otto Weriand of Windisch-Graetz (1873–1952) and Archduchess Elisabeth Marie of Austria (1883–1963), only child of Crown Prince Rudolf of Austria and Princess Stéphanie of Belgium. She was the great-grandchild of Emperor Franz-Joseph and Empress Elisabeth ('Sissi') of Austria. She was also the great-grandchild of King Leopold II of Belgium.
Princess Marie of Baden (1834–1899) Princess Marie of Baden ("Marie Amalie"; 20 November 1834 in Karlsruhe – 21 November 1899 in Amorbach) was the third daughter and seventh child of Leopold, Grand Duke of Baden (1790–1852) and his wife Princess Sophie of Sweden (1801–65). She was Princess of Leiningen through her marriage with Ernst Leopold, 4th Prince of Leiningen.