William Cavendish, 2nd Duke of Devonshire

William Cavendish, 2nd Duke of Devonshire (ca. 1673 - 1729). He married Hon. Rachel Russell (1674 - 1725), daughter of William, Lord Russell. One of their grandsons was the famous scientist Henry Cavendish who endowed the Cavendish Laboratory at the University of Cambridge. He served as Lord President of the Council from 1725 to 1729.