The "Dukes of Portugal" refers to noble titles granted to members of the Portuguese aristocracy, particularly during the late Middle Ages and the Renaissance. These dukes often held significant power and land, playing crucial roles in the political and social landscape of Portugal. The title of Duke was one of the highest ranks in the Portuguese nobility, often associated with royal families. One of the most notable dukes was the Duke of Braganza, who became the royal house of Portugal in the 17th century. The dukes were influential in various historical events, including the Portuguese Restoration War, which restored Portugal's independence from Spain in 1640. Their legacy continues to be a part of Portugal's rich history.