When did the man who Lord Frederick Charles Cavendish was a protege of last serve as Prime Minister?
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.
Lord Augustus FitzRoy Lord Augustus FitzRoy (16 October 171624 May 1741) was a British officer of the Royal Navy. He served during the War of the Austrian Succession, and was involved in the capture of the Spanish ship of the line, "Princesa", a major prize in the war. He was also the father of Augustus Henry Fitzroy, 3rd Duke of Grafton, who became Prime Minister of Great Britain.