Pick one category for the following text. The options are - company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work. George Spencer 4th Duke of Marlborough -  George Spencer 4th Duke of Marlborough KG PC FRS (26 January 1739 – 29 January 1817) styled Marquess of Blandford until 1758 was a British courtier and politician from the Spencer family. He served as Lord Chamberlain between 1762 and 1763 and as Lord Privy Seal between 1763 and 1765.
Office Holder