Peregrine Cavendish, 12th Duke of Devonshire English non-royal duke, horse racing administrator, landowner and farmer (born 1944) (b. 1944) Parents Deborah Cavendish, Duchess of Devonshire Andrew Cavendish, 11th Duke of Devonshire Children Celina Cavendish William Cavendish, Earl of Burlington Lady Jasmine Cavendish Siblings Lady Emma Tennant Mary Cavendish Lord Victor Cavendish Mark Cavendish Sophia Topley Partners Amanda Cavendish, Duchess of Devonshire