The House of Montmorency was a prominent noble family in France, known for its significant influence during the Middle Ages and the Renaissance. Originating in the 10th century, the family played a crucial role in French politics and military affairs, producing several notable figures, including Constable Anne de Montmorency, who served under King Francis I. The Montmorency family held vast estates and titles, including the Duchy of Montmorency. Their power began to decline in the 17th century, but they remained influential in various capacities, contributing to the cultural and political landscape of France until the French Revolution.