When did the man who Lord Frederick Charles Cavendish was a protege of last serve as Prime Minister?
Lord Frederick Cavendish Lord Frederick Charles Cavendish {'1': ", '2': ", '3': ", '4': "} (30 November 1836 – 6 May 1882) was an English Liberal politician and "protégé" of the Prime Minister, William Ewart Gladstone. Cavendish was appointed Chief Secretary for Ireland in May 1882 but was murdered only hours after his arrival in Dublin, a victim of the politically motivated Phoenix Park murders.
Keith Joseph Keith Sinjohn Joseph, Baron Joseph, (17 January 1918 – 10 December 1994), known as Sir Keith Joseph, 2nd Baronet, for most of his political life, was a British barrister and politician. A member of the Conservative Party, he served in the Cabinet under four prime ministers: Harold Macmillan, Sir Alec Douglas-Home, Edward Heath and Margaret Thatcher. He was a key influence in the creation of what came to be known as "Thatcherism" and the subsequent decline of one-nation conservatism and the postwar consensus.