Diana Cavendish (1909-1992) (1909–1992) Parents Moyra Beauclerk Lord Richard Cavendish Children Siblings Sybil Cavendish Alix Cavendish Richard Cavendish Elizabeth Cavendish Mary Cavendish John Cavendish Partners Ian Campbell-Gray Henry Gage, 6th Viscount Gage Robert Boothby, Baron Boothby