Cocondrius, immo Concordius

One of the surviving treatises περὶ τρόπων (i.e. on rhetorical figures) is attributed by the manuscript tradition to an enigmatic person named Κοκόνδριος. In this note, I argue that the correct name of this grammarian is actually Concordius, propose a terminus ante quem for his chronology, and offer an attempt to identify him.