George Montagu, 4th Duke of Manchester

George Montagu, 4th Duke of Manchester PC (6 April 17372 September 1788) was a British politician and diplomat.

Early life He was the son of Robert Montagu, 3rd Duke of Manchester and the former Harriet Dunch. Among his siblings were Lord Charles Montagu (who married Elizabeth Bulmer) and Lady Caroline Montagu (wife of Charles Herbert, grandson of Thomas Herbert, 8th Earl of Pembroke).

He served as Collector of Subsidies in the Port of London in 1762 and was Lord of the Bedchamber from 1762 to 1770, resigning his position after the fall of the Grafton ministry in January and went into opposition. Also in 1782, he was appointed a Privy Councillor. In 1783, he was appointed Ambassador to France to "supervise the conclusion of treaty negotiations between Great Britain and France, Spain, and the Netherlands."

Manchester was Lord Lieutenant of Huntingdonshire from 1762 until his death in 1788. He was also Grand Master of the Freemasons from 1777 to 1782 when he was succeeded by Prince Henry, Duke of Cumberland and Strathearn.

George Montagu, Viscount Mandeville (1763–1772), who died in childhood. Lady Caroline Maria Montagu (1770–1847), married James Graham, 3rd Duke of Montrose. William Montagu, 5th Duke of Manchester (1771–1843), who married Lady Susan Gordon, the third daughter of Alexander Gordon, 4th Duke of Gordon. Lady Susan was the co-heiress of her brother, George Gordon, 5th Duke of Gordon. Lord Frederick Montagu (1774–1827), who died unmarried. Lady Anna Maria Montagu (d. 1796), who died unmarried. Lady Emily Montagu, (d. 1838), who served as Housekeeper of Hampton Court Palace.

Manchester was notoriously short of funds, and in 1767 it was necessary for him to sell the Manchester family London house in Berkeley Square to the banker and politician Robert Child.

The Duke of Manchester died, after a brief illness, on 2 September 1788. The Dowager Duchess of Manchester died on 26 June 1832.