Archduchess Sophie of Austria's mother was, in addition to being Empress of Austria, Queen of which country?
Archduchess Sophie of Austria Archduchess Sophie of Austria (German: "Sophie, Erzherzogin von Österreich" ; 5 March 185529 May 1857) was the first child and first of three daughters born to the Empress Elisabeth (Sissi) and Franz Joseph, Emperor of Austria. She died aged two.
Princess Theresa of Bavaria (b. 1931) Archduchess Theresa of Austria, German: "Theresa Monika Valerie Elisabeth Ludovika Walburga Anna, Erzherzogin von Österreich" (born 9 January 1931 at Schloss Wallsee in Amstetten, Lower Austria, Federal State of Austria) is a member of the Tuscan branch of the House of Habsburg-Lorraine and an Archduchess of Austria and Princess of Bohemia, Hungary, and Tuscany by birth. Through her marriage to Prince Rasso of Bavaria, Theresa is also a member of the House of Wittelsbach and a Princess of Bavaria.