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
Semyon Davidovich Kirlian Semyon Davidovich Kirlian Semyon Davidovich Kirlian (; ; ; 20 February 1898 – 4 April 1978) was a Soviet inventor and researcher of Armenian descent, who along with his wife Valentina Khrisanovna Kirlian (; died 1972), a teacher and journalist, discovered and developed Kirlian photography. Kirlian was born in 1898 Yekaterinodar, Russian Empire (now Krasnodar, Russia) in an Armenian family. He possessed an early interest in, and aptitude for, work with electricity. Just before the Russian Revolution of 1917, Kirlian attended a conference in his home city at which Nikola Tesla gave talks and demonstrations; Tesla was one of Kirlian's