Petrograd Soviet
The Petrograd Soviet of Workers' and Soldiers' Deputies was a city council of Petrograd, the capital of Russia at the time. For brevity, it is usually called the Petrograd Soviet. Wikipedia
Founded: March 12, 1917
Founder: Leon Trotsky
Chairman: Nikolay Chkheidze; Irakli Tsereteli; Leon Trotsky; Grigory Zinoviev
Dissolved: 1924 (renamed Leningrad Soviet)