1717-80; archduchess of Austria: wife of Francis I (1708-65), emperor of the Holy Roman Empire: dowager empress (1765-80): queen of Bohemia & Hungary (1740-80): mother of Marie Antoinette
See Maria Theresa in American Heritage Dictionary 4
Queen of Hungary and Bohemia (1740-1780) whose reign was marked by the War of the Austrian Succession (1740-1748) and the Seven Years' War (1756-1763).