 Its present name originates from the Frankish term "Oustrich" - Eastern Kingdom (east of the Frankish kingdom).The Archduchy developed out of the Bavarian Margraviate of Austria, elevated to the Duchy of Austria according to the 1156 "Privilegium Minus" by Emperor Frederick Barbarossa.The House of Habsburg came to the Austrian throne in Vienna in 1282 and in 1453 Emperor Frederick III, also Austrian ruler, officially adopted the archducal title.