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. Empress Elisabeth of Austria: Duchess Elisabeth in Bavaria (24 December 1837 – 10 September 1898) was Empress of Austria and Queen of Hungary, and many others (see Grand title of the Empress of Austria) by marriage to Emperor Franz Joseph I.
Hungary