Maria Theresa (1717-1780), Archduchess of Austria and Queen of Hungary and Bohemia (1740-1780), who strengthened and unified the Austrian monarchy in the 18th century. Born in Vienna on May 13, 1717, she was the daughter of Holy Roman Emperor Charles VI. In 1736 she married Francis Stephen of Lorraine (later Holy Roman Emperor Francis I), and the couple eventually had 16 children, including two future emperors, Joseph II and Leopold II, and Marie Antoinette, later Queen of France.
