In which year did this British peer and politician whose daughter was Henrietta Ponsonby, Countess of Bessborough pass away?
Henrietta Ponsonby, Countess of Bessborough Henrietta Ponsonby, Countess of Bessborough (16 June 1761 – 11 November 1821), born Lady Henrietta Frances Spencer (generally called Harriet), was the wife of Frederick Ponsonby, 3rd Earl of Bessborough, and mother of the notorious Lady Caroline Lamb. Her father, John Spencer, 1st Earl Spencer, was a great-grandson of John Churchill, 1st Duke of Marlborough. Her sister was Georgiana Cavendish, Duchess of Devonshire.
Philip Sidney, 3rd Earl of Leicester Philip Sidney, 3rd Earl of Leicester (10 January 1619 – 6 March 1698) was an English politician who sat in the House of Commons at various times between 1640 and 1659 and inherited the peerage of Earl of Leicester in 1677. He supported the Parliamentary cause in the English Civil War. During the Wars of the Three Kingdoms, he was known as Viscount Lisle or (Lord Lisle) a subsidiary title of the Earls of Leicester.