William Montagu, often referred to as the 4th Duke of Manchester, was a British nobleman born in 1771. He was known for his role in the House of Lords and his involvement in various social and political issues of his time. Montagu inherited the title from his father and was recognized for his contributions to the British aristocracy. In addition to his political career, Montagu was also a landowner and had significant estates, including Kimbolton Castle. He was involved in the management of his properties and participated in local governance. Montagu passed away in 1848, leaving a legacy tied to his family's history and influence in England.