Tags: Noble.
Elizabeth Smith-Stanley Countess of Derby (née Hamilton; 26 January 1753 – 14 March 1797) was an English peeress. As the eligible eldest daughter of the 6th Duke of Hamilton she married the 12th Earl of Derby in 1774 giving birth to three children. Lady Derby was popular among society and considered a leader of fashion alongside the Duchess of Devonshire. Five years after the marriage Lady Derby embarked in a very public affair with the 3rd Duke of Dorset.