Which British peer and politician born in 1734 was a great-grandson of the 1st Duke of Marlborough?
John Spencer, 1st Earl Spencer John Spencer, 1st Earl Spencer (19 December 1734 – 31 October 1783) was a British peer and politician.
Hugh Boscawen, 1st Viscount Falmouth Hugh Boscawen, 1st Viscount Falmouth {'1': ", '2': ", '3': ", '4': "} (pronounced "Boscowen") ( ; ca. 1680 – 25 October 1734) was a Cornish Whig politician who sat in the House of Commons for Cornish constituencies from 1702 until 1720 when he was raised to the peerage.