The title "Duke of France" historically refers to a noble rank within the French aristocracy. Dukes were often granted control over specific regions or territories, known as duchies, and held significant power and influence during the medieval period. The title was part of the feudal system, where dukes served under the king and managed lands, collected taxes, and maintained order. One of the most notable dukes in French history is Duke of Normandy, who played a crucial role in the Norman Conquest of England in 1066. The title has evolved over time, and while it is no longer a formal rank in modern France, it remains a symbol of historical nobility and heritage.