 The 6th-century "Index" of Theodorus Lector is the first document that lists him among the fathers of the First Council of Nicaea in 325.Many other bishops of Myra are named in extant documents, including Petrus, the author of theological works in defence of the Council of Chalcedon quoted by Saint Sophronius of Jerusalem and by Photius ("Bibliotheca", Codex 23).Theodorus and Nicolaus were both at the Second Council of Nicaea in 787, the former recanting his previous iconoclast position, the latter being the Catholic bishop whom the iconoclasts had expelled.