William Cavendish, 3rd Duke of Devonshire (1698 - 1755), 3rd Duke of Devonshire, married Catherine Hoskins (or Hoskyn) (died 1777). He served as Lord Privy Seal from 1731 to 1733.

Preceded by:
William Cavendish
Duke of Devonshire Followed by:
William Cavendish