The 6th Duke of Manchester, known as George Augustus Frederick (born 1826, died 1892), was a British nobleman and a member of the House of Lords. He inherited the title from his father, the 5th Duke, in 1848. The Duke was known for his lavish lifestyle and significant landholdings, particularly in England and Scotland. Throughout his life, the 6th Duke faced financial difficulties, leading to the sale of various estates. He was also involved in politics, serving as a Liberal member of the House of Lords. His legacy includes the continued prominence of the Manchester family in British aristocracy.