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
Jaime Davidovich born in Buenos Aires, Argentina to Lucio Davidovich and Clara Davidovich (née Jacif). His parents were Jewish immigrants from Ukraine. When Davidovich was eight years old he contracted rheumatic fever and was bedridden for several months. It was during which time his parents introduced him to art materials to pass the time. In 1948 when he was 12 years old, Davidovich began to study art under his cousin Simón Feldman during which time he became interested in the work of Paul Cézanne, Henri Matisse and Pablo Picasso. Davidovich later worked under the Hungarian cubist artist Aurel Kessler. In 1958, Davidovich