In attempts to be freed, he dedicated the first treatise to Carolus Rym (Charles Ramire), ambassador to the Holy Roman Emperor Maximilian II, and the second treatise to François de Noailles, bishop of Aire and ambassador to the King of France. They were pleased with his works, and endeavoured to obtain his release.
He wrote two treatises in an effort to gain his freedom, dedicating the first to Charles Ramire, the ambassador to the Holy Roman Emperor Maximilian II, and the second to François de Noailles, the bishop of Aire and ambassador to the King of France. They were pleased with his work and worked to secure his release.