John Buchan, 1st Baron Tweedsmuir PC GCMG GCVO CH (1875–1940) was a Scottish novelist, historian, biographer and editor. Outside the field of literature he was, at various times, a barrister, a publisher, a lieutenant colonel in the Intelligence Corps, the Director of Information—reporting directly to prime minister David Lloyd George—during the First World War and a Unionist MP who served as Governor General of Canada, the 15th since Canadian Confederation.