Jeanne du Port dating history

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Jeanne du Port (née Duchesne; after 1574 – after 1647) was the daughter of French alchemist Joseph Duchesne (known as Quercetan), and possibly an accomplished Paracelsian alchemist in her own right. She is remembered for a group of alchemical treatises called "Quercitan's daughter's letters", written in the first half of the 17th century and attributed variously to "Quercitan's daughter", "Mr. de Chenis Quercitan's daughter", "Neptis" (meaning female descendant), or, more vaguely, "a learned woman of France". Although the author has sometimes been identified as Madame de la Martinville, who collaborated with Duchesne and whom he once called his "spiritual daughter", some or all of the letters were probably written by du Port, Duchesne's literal daughter.