John Winston Spencer-Churchill, 7th Duke of Marlborough,, styled Earl of Sunderland from 1822 to 1840 and Marquess of Blandford from 1840 to 1857, was a British Conservative cabinet minister, politician, peer, and nobleman. He was the paternal grandfather of Prime Minister Sir Winston Churchill.

James Hamilton, 1st Duke of Abercorn,, styled Viscount Hamilton from 1814 to 1818 and The Marquess of Abercorn from 1818 to 1868, was a British Conservative statesman who twice served as Lord Lieutenant of Ireland.