He was Member of Parliament for Oxford, Derby then West Monmouthshire and held the offices of Home Secretary and Chancellor of the Exchequer under William Ewart Gladstone before becoming Leader of the Opposition.In manner and by origin he was a patrician figure, but he saw most issues exclusively in terms of parliamentary infighting… His views were usually much more of a reaction to what his political enemies, in the other party and in his own, were saying than the result of any objective thought.He inspired considerable loyalty among his followers – the Great Gladiator he was sometimes enthusiastically called – but his colleagues, partly as a result of his execrable temperament and his bullying… found him a difficult man with whom to work.[1] His probate was sworn in the year he died (when he was resident at Nuneham Park and at Malwood in Hampshire) then resworn, over £3000 upward, at ninepence short of £190,265 (equivalent to about £25,900,000 in 2023).[3] At Cambridge, William rejected his family's Tory instincts and began to write for the Morning Chronicle in support of Sir Robert Peel.[3] He quickly made his mark as a speaker,[1] his reception into London society being eased by his uncle George Harcourt and aunt Frances Waldegrave.In 1862, he wrote some famous letters to The Times over the signature of "Historicus," supporting Britain's neutrality in the American Civil War and condemning the widespread public sympathy for the Confederate States.He was re-elected in the Liberal victory at the 1880 United Kingdom general election and, though he had not been a strong supporter of Gladstone in opposition, he was appointed Home Secretary.After Gladstone's retirement in 1894 and Lord Rosebery's selection as prime minister, Harcourt became the leader of the Liberal party in the House of Commons, but it was never probable that he would work comfortably in the new conditions.Though returned for West Monmouthshire (1895, 1900), Harcourt's speeches in debate only occasionally showed his characteristic spirit, and it was evident that for the hard work of opposition he no longer had the same motivation as of old.The split excited considerable comment, and resulted in much heart-searching and a more or less open division between the section of the Liberal party following Rosebery and those who disliked his imperialism.[1] Though now a private member, Harcourt still continued to assert his independent position, and his attacks on the government were no longer restrained by any deference to Liberal Imperialism.