The Dukes of Alençon were a noble family in France, originating from the region of Alençon. They played a significant role in the political and military affairs of France during the Middle Ages and the Renaissance. The title was established in the 12th century and was held by various members of the House of Valois and later the House of Bourbon. Notably, the most famous Duke was Charles, Duke of Alençon, who was a key figure during the Hundred Years' War. The dukedom was often associated with the royal family, and its holders frequently participated in important events, including battles and court politics, influencing the course of French history.