Who was Britain's oldest Prime Minister and lived in the Seaforth House built for his father?
William Ewart Gladstone William Ewart Gladstone, ( ; 29 December 1809 – 19 May 1898) was a British Liberal statesman and earlier Conservative politician. In a career lasting over 60 years, he served as Prime Minister four separate times (1868–74, 1880–85, February–July 1886 and 1892–94), more than any other person, and served as Chancellor of the Exchequer four times. Gladstone was also Britain's oldest Prime Minister; he resigned for the final time when he was 84 years old.
Robert Walpole (1650–1700) Colonel Robert Walpole (18 November 1650 – 18 November 1700) was an English Whig politician and soldier who represented the borough of Castle Rising from 1689 to 1700 in the House of Commons of England. Because he held the rank of Colonel in the militia, he was widely known as Colonel Walpole. He is mainly notable for being the father of Sir Robert Walpole. His son, who served during the reigns of George I and George II, is considered to have been the first Prime Minister of Great Britain. He is also known for being the "Guinness World Records" titular for having the world's longest overdue book.