Lord Richard Cavendish British politician (1871-1946) (1871–1946) Parents Emma Elizabeth Lascelles Lord Edward Cavendish Children Richard Cavendish Sybil Cavendish Mary Cavendish Elizabeth Cavendish John Cavendish Alix Cavendish Diana Cavendish Siblings Victor Cavendish, 9th Duke of Devonshire John Spencer Cavendish Partners Moyra Beauclerk