In which year did this British peer and politician whose daughter was Henrietta Ponsonby, Countess of Bessborough pass away?
John Spencer, 1st Earl Spencer John Spencer, 1st Earl Spencer (19 December 1734 – 31 October 1783) was a British peer and politician.
Earl de Grey Earl de Grey, of Wrest in the County of Bedford, was a title in the Peerage of the United Kingdom. It was created on 25 October 1816 (as Countess de Grey) for Amabell Hume-Campbell, Dowager Lady Polwarth and "suo jure" 5th Baroness Lucas, with remainder to the heirs male of her body and in default of such issue to her sister Mary Jemima Robinson, Dowager Baroness Grantham, and the heirs male of her body. She was the eldest daughter and co-heir of Philip Yorke, 2nd Earl of Hardwicke, and Jemima Yorke, 2nd Marchioness Grey (see Marquess Grey), eldest daughter of John Campbell, 3rd Earl of Breadalbane and Holland, and Lady Amabel Grey, eldest daughter of Henry Grey, 1st Duke of Kent (see Duke of Kent). The marquessate of Grey had become extinct on her mother's death in 1797 and when the Grey title was revived in favour of her daughter the style "de Grey" was used to distinguish it from the earldom of Grey which had been created in 1806; the Grey family was extremely distantly related to the Earl Grey). The Countess de Grey was the widow of Alexander Hume-Campbell, Lord Polwarth, eldest son of Hugh Hume, 3rd Earl of Marchmont.