Archduchess Sophie of Austria (birth name: "Sophie Friederike Dorothea Maria Josepha von Habsburg-Lothringen") (b. March 5, 1855 in Vienna - d. May 29, 1857 in Budapest) was born to Empress Elisabeth of Austria ("Sissi") and Emperor Franz Josef of Austria. She was their first child, and was named after her paternal grandmother, Sophie, Princess of Bavaria. Wikipedia
The definitive Wikipedia entry for Archduchess Sophie Of Austria. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Archduchess_Sophie_of_Austria