François Ier d'Autriche
Maria Theresa of Naples and Sicily (6 June 1772 – 13 April 1807) was the last Holy Roman Empress and the first Empress of Austria by marriage to Francis II, Holy Roman Emperor. She was the eldest daughter of Ferdinand IV &amp; III of Naples and Sicily (later Ferdinand I of the Two Sicilies) (1751–1825) and Maria Carolina of Austria (1752–1814).