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.
James Compton, 3rd Earl of Northampton James Compton, 3rd Earl of Northampton FRS (19 August 1622 – 15 December 1681), known as Lord Compton from 1630 to 1643, was an English peer, soldier, and politician.