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In page Nikolay and Medea Figner:

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She was referred to after marriage as either Medea Mei-Figner (the form of her name used in most Western reference books) or simply Medea Figner. Furthermore, she was given the patronymic of Ivanovna, and is sometimes designated as Medea (or Medeya) Ivanovna (Mei-)Figner. She eventually mastered Russian to such an extent that native speakers could not tell she had learned it only from the age of 30.[citation needed]