Olga Kameneva Olga Kameneva Olga Davidovna Kameneva (, ; 1883 – 11 September 1941) (née Bronstein — Бронштейн) was a Russian Bolshevik revolutionary and a Soviet politician. She was the sister of Leon Trotsky and the first wife of Lev Kamenev. Olga Bronstein was born in Yanovka, Kherson Governorate, Russian Empire (present-day Kirovohrad Oblast, Ukraine), a small village 15 miles from the nearest post office. She was one of two daughters of a wealthy but illiterate farmer, David Leontyevich Bronstein (or Bronshtein, 1847–1922), a Jewish colonist, and Anna Lvovna (née Zhivotovskaya) (1850–1910). Although the family was of Jewish extraction, they were not
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