His fellow Knights of the Garter created in 1867 were Charles Gordon-Lennox, 6th Duke of Richmond, Charles Manners, 6th Duke of Rutland, Henry Somerset, 8th Duke of Beaufort, Prince Arthur, Duke of Connaught and Strathearn, Franz Joseph I of Austria and Alexander II of Russia.
In 1837 a Committee was formed under the chairmanship of the Duke of Rutland to raise sufficient funds for a memorial to Arthur Wellesley, the 1st Duke of Wellington.
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In 1904 he provided pre-opera lectures for Charles Manners' (1857–1938) Moody-Manners touring company (the larger) for its performances at Theater Royal, Drury Lane lecturing on Charles Gounod's Faust and Fromental Halévy's La Juive, and Richard Wagner's Tristan und Isolde and Lohengrin.
His elder brother Charles Manners-Sutton was Archbishop of Canterbury from 1805 to 1828 and the father of Charles Manners-Sutton, 1st Viscount Canterbury, Speaker of the House of Commons from 1817 to 1834.
Manners-Sutton was the son of the Most Reverend Charles Manners-Sutton, Archbishop of Canterbury, fourth son of Lord George Manners-Sutton, third son of John Manners, 3rd Duke of Rutland.