Question: Who did the grandson of the Earl of Sunderland (from 1822-1840) marry?
Sentence (from "Descendants of Winston Churchill"): Sir Winston Churchill, son of Lord Randolph Churchill and grandson of John Spencer-Churchill, 7th Duke of Marlborough, was Prime Minister of the United Kingdom between 26 October 1951 – 6 April 1955 and 10 May 1940 – 26 July 1945.
Relevant evidence: No