Maria Tarnowska

Countess Maria Tarnowska (or Tarnowskaya, Tarnovska, etc.; 9 June 1877, Poltava, Russian Empire – 23 January 1949, Santa Fe, Argentina), born Maria Nikolaevna O'Rourke (Russian phonetical transcription: Orurk), was a Russian convict. She was the daughter of Count Nikolay O'Rourke a Russian naval officer of Scottish origin and his second wife Ekaterina Seletska - a noblewoman of Cossack origin. She gained international notoriety by standing trial for plotting and instigating the murder of one of her lovers. Her 1910 trial in Venice and subsequent conviction attracted media attention from both sides of the Atlantic and became the subject of various books (Annie Chartres Vivanti, Hans Habe, etc.). Luchino Visconti and Michelangelo Antonioni worked on a treatment for a film to be called Il processo di Maria Tarkowska (The Trial of Maria Tarkowska), which was never made.

After marrying the Russian aristocrat Wassily Tarnowski (1872 - 1932) at the age of seventeen and giving birth to a son Wassily (b. 1895) and a daughter Tatyana (1898 - 1994), she became romantically involved with several other men. She was also known to abuse narcotic drugs (morphine).

In 1907 in Venice, one of Tarnowska's lovers, Nicholas Naumov (also spelled Naumoff), killed another one of her lovers, Count Pavel Kamarovsky, allegedly upon her instigation. The Countess Tarnowska, as she was commonly called, was arrested that same year in Vienna and transferred to La Giudecca penitentiary in Venice, where the trial was to be held.

...
Wikipedia