Anthony is a brother in the Abbey of Sarth.
He is the Keeper of Knowledge, the head archivist of the libraries. He led all the brothers whose sole purpose is to catalog all the works in guides.
He had the remarkable ability to pull facts seemingly from out of the air, remembering things read once in passing a decade before.
During the attack in the Abbey, he correctly identified the being as a conjured creature. He deduced that to kill it, one must hit the face in its chest.