Sergey Zorin
Sergey Semyonovich Zorin , was the party's First Secretary of the Leningrad City Committee, roughly equating to that of mayor. He held the position between November 1919 and February 1921. As such, he hosted the 2nd World Congress of the Comintern.
Sergey Semyonovich Gumberg was born in Ukraine. His father was a rabbi in Elizavetgrad and his brother, Alexander Gumberg emigrated to the United States in 1902. Sergey followed him in 1911 staying in New York. Here he became active in the Socialist Party of America. He supported himself as an unskilled labourer before returning in March 1917 with Trotsky aboard the SS Kristianiafjord.
He was married to Lisa Zorin, with whom he hosted Emma Goldman during her stay in Russia from January 17, 1920 to December 1921.
Zorin aligned himself with the Left Opposition. He travelled to Ivanova with Alexander Voronsky in 1927, which was used as a pretext for the Voronsky's expulsion from the Communist Party.
He was arrested on 1 January 1935, and sentenced to 5 years' imprisonment on 26 March that year in the Monastery of Saint Euthymius, then a prison in Suzdal. He was shot on 10 September 1937.
