Complex sentence: Lady Henrietta Elizabeth Cavendish was born at Devonshire House on 29 August 1785, the younger daughter of William Cavendish, 5th Duke of Devonshire and his wife Lady Georgiana Spencer.
Split into simpler sentences: Lady Henrietta Elizabeth Cavendish was born at Devonshire House on 29 August 1785. She was the younger daughter of William Cavendish, 5th Duke of Devonshire and his wife Lady Georgiana Spencer.