Lev Kamenev arrested in 1902, ending his formal education. From that point on, he worked as a professional revolutionary, and was active in the capital St. Petersburg, Moscow and Tiflis. He adopted the surname Kamenev during this period. In the early 1900s, he married Olga Bronstein, a fellow Marxist (and younger sister of Leon Trotsky, who had also adopted a different surname). The couple had two sons together. Kamenev joined the Communists in 1901. He took a brief trip abroad in 1902, meeting Russian social democratic leaders living in exile, including Vladimir Lenin, whose adherent and close associate he became. He also
Lev Orekhov Lev Orekhov Lev Nikolaevich Orekhov (; November 8, 1913, city of Tula, Moscow Region of the Russian Empire – November 6, 1992, Saint Petersburg, Russia) was a Russian Soviet painter, who lived and worked in Leningrad. He was regarded as one of the representatives of the Leningrad school of painting. Lev Nikolaevich Orekhov was born November 8, 1913, in the industrial city of Tula, located in Moscow region of the Russian Empire. In 1932, Orekhov entered at the first course of the painting department of the Leningrad Institute of Painting, Sculpture and Architecture. There, he studied under Boris Fogel, Semion