The Duke of Montmorency was a prominent noble title in France, particularly during the 16th and 17th centuries. The title was held by the Montmorency family, who were influential in French politics and military affairs. The most notable Duke was Henri de Montmorency, who played a significant role in the French Wars of Religion and was a leader of the Huguenots. The Montmorency family was known for its vast estates and connections to the French crown. The title of Duke of Montmorency was officially created in 1620, and the family contributed to various cultural and political developments in France. Their legacy includes notable figures in both the military and the arts.