Vladimir Lenin

Vladimir Ilyich Ulyanov (Russian: Влади́мир Ильи́ч Улья́нов, IPA: , better known by the alias Lenin  (Ленин) (April 22, 1870 – January 21, 1924), was a Russian revolutionary, a communist politician, the main leader of the October Revolution, the first head of the Russian Soviet Socialist Republic, until 1922 (or Bolshevist Russia), and the primary theorist of Leninism, an extension of Marxist theory.