Lev Borisovich Kamenev (Russian: Лев Бори́сович Ка́менев, IPA: [ˈlʲɛf bɐˈrʲisəvʲɪtɕ ˈkamʲɪnʲɪf]; 18 July [O.S. 6 July] 1883 – 25 August 1936), born Rozenfeld (Russian: Ро́зенфельд), was a Bolshevik revolutionary and a prominent Soviet politician. He was one of the seven members of the first Politburo, founded in 1917 to manage the Bolshevik Revolution: Lenin, Zinoviev, Kamenev, Trotsky, Stalin, Sokolnikov and Bubnov.Kamenev was the brother-in-law of Leon Trotsky.