5917408 Maria Theresa, c.1750 (oil on canvas) by European School, (18th century); 63x47.5 cm; Slovenska Narodna Galeria, Bratislava, Slovakia; (add.info.: Maria Theresia Walburga Amalia Christina (1717-80) was the only female ruler of the Habsburg dominions and the last of the House of Habsburg. She was archduchess of Austria, Queen of Hungary and Bohemia 1740-80 and by marriage to Francis I (1708-65) also Duchess of Lorraine, Grand Duchess of Tuscany and Holy Roman Empress.).