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.
George Abercromby, 4th Baron Abercromby George Ralph Campbell Abercromby, 4th Baron Abercromby DL, JP (23 September 1838 – 30 October 1917), styled The Honourable from 1843 to 1852, was a Scottish peer and politician.