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.
Mary Wilson, Baroness Wilson of Rievaulx Gladys Mary Wilson, Lady Wilson of Rievaulx (née Baldwin; born 12 January 1916), is an English poet and the widow of former UK Prime Minister Harold Wilson; who served from 1964 to 1970 and again from 1974 to 1976. She is the only spouse of any Prime Minister to become a centenarian.