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.
Lady Constance Gaskell Lady Constance Harriet Stuart Milnes Gaskell, DCVO (née Knox; 21 April 1885 – 29 April 1964) was a Woman of the Bedchamber to Queen Mary from 1937–53 and Lady-in-Waiting to Princess Marina, Duchess of Kent from 1953–60.