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.
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.