Sir Spencer Walpole KCB, FBA (6 February 1839 – 7 July 1907) was an English historian and civil servant.
Background
He came of the younger branch of the de facto first prime minister, Robert Walpole who revived the Whig Party, being a patrilineal descendant of one of his brothers, the 1st Baron Walpole of Wolterton. His father Spencer Horatio Walpole (1807–1898) was three times Home Secretary under the 14th Earl of Derby. Through his mother he was a grandson of Spencer Perceval, the Tory prime minister. In 1882 he was made lieutenant-governor of the Isle of Man, and from 1893 to 1899 he was secretary to the Post Office. In 1898 he was knighted. in five volumes, was carried down to 1858, and was continued in his History of Twenty-Five Years (4 vol. 1904).