A representative from the Black Sea area, the "head of the Scythian bishopric", was present at the First Council of Nicaea in 325, as well as the First Council of Constantinople in 381; it has been surmised that this representative would have to have been Bishop Cadmus of the Bosporan Kingdom. Ostrogoths, who remained on present-day Ukrainian lands after the invasion of the Huns, established a metropolinate under the Bishop of Constantinople at Dorus in northern Crimea around the year 400. The Goths initially adhered to Arianism, but by the 9th century, with the establishment of the Byzantine Cherson theme, the Goths in Crimea turned to the Greek Orthodox Church, under the Metropolitanate of Gothia.