Dorothy Bentinck, Duchess of Portland 18th-century English noblewoman (1750–1794) Parents Charlotte Cavendish, Marchioness of Hartington William Cavendish, 4th Duke of Devonshire Children Lord Charles Bentinck Charlotte Cavendish-Bentinck Frederick Cavendish-Bentinck William Bentinck, 4th Duke of Portland Lord William Bentinck Siblings William Cavendish, 5th Duke of Devonshire George Cavendish, 1st Earl of Burlington Lord Richard Cavendish Partners William Cavendish-Bentinck, 3rd Duke of Portland
