The initial correspondence had been described to the Baron by a double agent using the alias Coledrin, but the most damning evidence, including plans for a hundred people to rise up in Chartley, was deciphered by Thomas Phelippes, who reported it to Francis Walsingham.  
It featured correspondence which was translated into English and encrypted by the secretary Gilbert Curle.  Messages were transmitted through a local brewer, with the first coming from the Baron of Chateauneuf.  The initial correspondence had been described to the Baron by a double agent using the alias Coledrin, but the most damning evidence, including plans for a hundred people to rise up in Chartley, was deciphered by Thomas Phelippes, who reported it to Francis Walsingham.  Chidiock Tidbourne, John Ballard, and John Savage were all executed for their roles in, FTP, what plot to kill Queen Elizabeth I, in which Mary, Queen of Scots was also implicated and for which she was sentenced to death?
It featured correspondence which was translated into English and encrypted by the secretary Gilbert Curle.  
Babington plot