Charles de Prunelé, Baron d'Esneval was a French diplomat and ambassador in Scotland in 1586. He is known by his title, as "D'Esneval", or "D'Aisneval", or "D'Anneval".
Catherine de' Medici wanted D'Esneval to discover the Scottish king's marriage plans
James VI told D'Esneval that his portrait painter was a busy man. Portrait attributed to Adrian Vanson, HES, Edinburgh Castle
D'Esneval stayed with the court at Falkland Palace until he left Scotland in August 1586.
Portrait of James VI, dated 1586, National Trust for Scotland, Falkland Palace
Jérôme Pasquier
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Jérôme Pasquier was a French servant of Mary, Queen of Scots, involved in writing and deciphering coded letters.
Charles de Prunelé, Baron d'Esneval
…speculation that the female prisoner alleged to be in the Tower was not Pierrepont, but Mary herself. One of Mary's cipher clerks (Nau's niece's husband), Jérôme Pasquier, had been taken to the Tower from Chartley, and Francis Walsingham was considering bringing Mary to London. D'Esneval heard that a copy of Mary's will…
Pasquier was taken to the Tower of London and interviewed about his secretarial work
Cipher key from the Babington Plot