Who was Britain's oldest Prime Minister and lived in the Seaforth House built for his father?
Seaforth House Seaforth House was a mansion in Seaforth, Merseyside England built in 1813 for Sir John Gladstone, father of William Ewart Gladstone who was Prime Minister of the United Kingdom four times.
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.