The Dukes of Gascony were noble rulers in the region of Gascony, located in southwestern France. This title was historically associated with the control of the area, which was known for its strategic importance and rich resources. The dukes played a significant role in the feudal system, often serving as vassals to more powerful monarchs. The title of Duke of Gascony was notably held by the English crown during the Hundred Years' War, reflecting the complex political landscape of the time. The dukes were involved in various conflicts and alliances, influencing the history of both England and France.