Anne de Montmorency, duc de Montmorency (c. 1493 – 12 November 1567) was a French noble, governor, royal favourite and Constable of France during the mid to late Italian Wars and early French Wars of Religion. He served under five French kings (Louis XII, François I, Henri II, François II and Charles IX). He began his career in the latter Italian Wars of Louis XII, seeing service at Ravenna. When François, his childhood friend, ascended to the throne in 1515 he advanced as governor of the Bastille and Novara, then in 1522 was made a Marshal of France. He fought at the French defeat at La Bicocca in that year, and after assisting in rebuffing the invasion of Constable Bourbon he was captured at the disastrous Battle of Pavia. Quickly freed he worked to free first the king and then the king's sons. In 1526 he was made Grand Maître (Grand Master), granting him authority over the king's household, he was also made governor of Languedoc. He aided in the marriage negotiations for the king's son the duc d'Orléans to Catherine de' Medici in 1533. In the mid 1530s he found himself opposed to the war party at court led by Admiral Chabot and therefore retired. He returned to the fore after the Holy Roman Emperor invaded Provence, leading the royal effort that foiled his invasion, and leading the counter-attack. In 1538 he was rewarded by being made Constable of France, this made him the supreme authority over the French military. For the next two years he led the efforts to secure Milan for France through negotiation with the Emperor, however this proved a failure and Montmorency was disgraced, retiring from court in 1541.
He spent the next several years at his estates, relieved of the exercise and incomes of his charges, and removed as governor of Languedoc. He allied with the dauphin, the future Henri II during this time in his rivalry with the king's third son. Upon the dauphin's ascent in 1547 Montmorency was recalled from his exile and restored to all his offices, with his enemies disgraced. He now found himself opposed at court by the king's mistress Diane de Poitiers and her allies the duc de Guise and Cardinal de Lorraine. He led the crushing of the gabelle revolt of 1548 and then the effort to reconquer Boulogne from the English which was accomplished by negotiated settlement. In 1551 he was elevated from a baron to the first duc de Montmorency. In 1552 he led the royal campaign to seize the Three Bishoprics from the Holy Roman Empire, though was overshadowed by the glory Guise attained in the defence of Metz. Montmorency led the inconclusive northern campaigns of 1553 and 1554 and was increasingly criticised for his cautious style of campaign. From 1555 he led the drive to peace that secured the Truce of Vaucelles in mid 1556, however the peace would be shortlived. In 1557 he was again tasked with fighting on the northern frontier, and was drawn into the disastrous battle of Saint-Quentin at which he was captured and the French army destroyed. Guise was thus made lieutenant-general of the kingdom, while Montmorency tried to negotiate peace from his captivity. The king supported him in this from late 1558 and in April 1559 he would help bring about the Peace of Cateau-Cambrésis which brought the Italian Wars to an end.