Chalcedon
Chalcedon ( or ;
, sometimes transliterated as "Chalkedon") was an ancient maritime town of Bithynia, in Asia Minor. It was located almost directly opposite Byzantium, south of Scutari (modern Üsküdar) and it is now a district of the city of Istanbul named Kadıköy. The name "Chalcedon" is a variant of Calchedon, found on all the coins of the town as well as in manuscripts of Herodotus's "Histories", Xenophon's "Hellenica", Arrian's "Anabasis", and other works. Except for a tower, almost no above-ground vestiges of the ancient city survive in Kadıköy today; artifacts uncovered at Altıyol and other excavation sites are on display at the Istanbul Archaeological Museum.
Acacius of Constantinople
Acacius advised the Byzantine emperor Zeno to issue the Henotikon edict in 482, in which Nestorius and Eutyches were condemned, the twelve chapters of Cyril of Alexandria accepted, and the Chalcedon Definition ignored. This effort to shelve the dispute over the Orthodoxy of the Council of Chalcedon was quite in vain. Pope Felix III saw the prestige of his see involved in this slighting of Chalcedon and his predecessor Leo's epistle. He condemned and deposed Acacius, a proceeding which the latter regarded with contempt, but which involved a schism between the two sees that lasted after Acacius's death. The Acacian schism lasted through the long and troubled reign of the Byzantine emperor Anastasius I, and was only healed by Justin I under Pope Hormisdas in 519.