1586. They showed him some examples of his code work. His responses are recorded in three surviving documents. Pasquier confessed to writing and transcribing coded letters for Mary. He said that Nau was in charge of the cipher keys or alphabets. The cipher work took place in Nau's chamber. Pasquier delivered completed ciphered and deciphered letters to Mary or Nau. He claimed not to remember the contents of the letters. He did remember encoding a letter in cipher for Mary in 1584 to send to the French ambassador Michel de Castelnau asking him to negotiate a pardon for Francis Throckmorton after his treason trial. William Cecil wrote to Christopher Hatton discussing the idea of threatening Nau, Curle, and Pasquier so they would confirm Mary's crime and ensure their own escape. Claude Nau mentioned that some significant letters, copied in French and English, were kept in chests belonging to Pasquier. One way of making a case against Mary was to find incriminating and treasonous material in her letters, but her distance from the material in cipher produced by her secretaries was a problem. Mary was able to deny writing to Anthony Babington with her own signature, and question the authenticity of any letters produced. Conyers Read argues that the secretaries were interviewed to demonstrate the genuineness of deciphered letters and that Mary was the author of her letters. Walsingham sent news to the Scottish Court in September 1586 that Mary was to be moved to Fotheringhay, and that "the matters whereof she is guilty are already so plain and manifest (being also confessed by her two secretaries), as it is thought, they shall required no long debating". Pasquier's evidence does not seem to have been directly used in Mary's treason trial. Walsingham and Phelippes focused on a letter sent to Babington written by Nau, the "bloody letter". Phelippes acknowledged that Mary usually sent more letters every fortnight "than it was possible for one body well exercised therein to put in cipher and decipher". After Mary's trial Pasquier remained responsible for some household accounts and a distribution of cloth for livery clothes in Mary's household. He wrote to Phelippes in January 1587, concerning these financial matters. According to Blackwood, who was informed by the account of Dominique Bourgoing, Mary came to distrust Pasquier and Nau, assuming that they had betrayed her. She cut them out of her will, and included a note