Nicolas Fouquet to visit him only once, in 1679. The former minister bore his imprisonment with fortitude and composed several translations and devotionals in prison. According to official records, Fouquet died in Pinerolo on 23 March 1680. A year after his death, his remains were moved from Pinerolo to the family crypt in the Église Sainte-Marie-des-Anges in Paris. Fouquet's story is often entwined with that of the Man in the Iron Mask, who is often identified as the true king or even as an identical twin brother of Louis XIV. As such, he is a pivotal character in Alexandre Dumas' novel "The
Man in the Iron Mask jailers took – created significant interest in his story and gave birth to many legends. Many theories exist and several books have been written about the case. Some were presented after the existence of the letters was widely known. Still later commentators have presented their own theories, possibly based on embellished versions of the original tale. Theories about his identity popular during his time included that he was a Marshal of France; the English Henry Cromwell, son of Oliver Cromwell; or François, Duke of Beaufort. Later, many people such as Voltaire and Alexandre Dumas suggested other theories about the man