Some articles on aymery:

Tris's Book - Plot Summary
... Tris's cousin Aymery Glassfire comes to bring Niko a letter, and is recognized by her ... When looking through Aymery's belongings, Briar finds that even though he claims he's staying for several weeks, Aymery has only brought a very small wardrobe ... When following Aymery out of Discipline at midnight, Tris and Briar confront him, whereupon he reveals that he had been working for Enahar, the pirates' chief mage, for some time ...