The title "Duke of Austria" refers to a noble rank historically associated with the region of Austria. The title was first established in the 12th century and was held by members of the House of Habsburg, a powerful dynasty in European history. The dukes played a significant role in the political landscape of Central Europe, often expanding their influence through marriage and alliances. In 1453, the title was elevated to that of Archduke, reflecting the growing importance of the Habsburgs. The Habsburg dynasty would go on to rule over vast territories, including the Holy Roman Empire and parts of Italy and Spain. The title remains a significant part of Austria's historical legacy.