 Complete the following phrase:  In the 11th century, a bishop Michael is known through his seal; from the decoration it appears that he may have previously been a member of the clergy of the Hagia Sophia in Constantinople. In 1305 or 1306, an unnamed bishop of Chariopolis attended a synod called by Patriarch Athanasius I of Constantinople to condemn John Drimys. In 1347, the subordination of the bishopric of Chariopolis, which apparently had been vacant since the start of the 