Maria Theresia Walburga Amalia Christina (13 May 1717, Vienna -29 Nov. 1780, Vienna), the only female ruler of the Habsburg empire, was the sovereign of Austria, Hungary, Croatia, Bohemia, Mantua, Milan, Lodomeria and Galicia, the Austrian Netherlands, and Parma. Her 40-year reign began at the death of her father, Emperor Charles VI, in 1740. She and her husband had 16 children. Among the 13 who survived infancy were Queen Marie Antoinette of France, Queen Maria Carolina of Naples, Duchess Maria Amalia of Parma, and two Holy Roman Emperors, Joseph II and Leopold II; the marriages of her all children would be carefully calculated to ensure the most political gain for Austria. Though her own marriage had also been an arranged one, the Empress was very much in love with her husband and was devastated at his death in 1765; for the remaining 15 years of her life she wore mourning... died at 63. (http://godsandfoolishgrandeur.blogspot.nl/2014/11/the-empress-maria-theresia-by-jean.html)