a French Renaissance polymath. He was a lawyer and politician, a mathematician and alchemist, an antiquarian, poet and friend of French literati. Jean D'Espagnet is known to have owned several books that had previously formed part of Montaigne's library, including his copy of De rerum natura, in which his signature overwrites that of Montaigne's on the title-page. In 1623 D'Espagnet wrote Arcanum Hermeticae philosophiae and Enchiridion physicae restitutae.
