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Mathilde-Marie Feliksovna Kschessinska was a Polish–Russian ballerina from the noble Krzesiński family. Her father, Feliks Krzesiński, and her brother both danced in Saint Petersburg. She was a mistress of the future Emperor Nicholas II of Russia before his marriage, and later the wife of his cousin Grand Duke Andrei Vladimirovich of Russia. She was known in the West as Mathilde Kschessinska or Matilda Kshesinskaya.