Constantine IV
Vitalian refused to support Mezezius's usurpation of the throne, gaining the favor of Constans II's son and successor, Constantine IV. Constantine IV returned the favor by refusing to support the striking of Vitalian's name from the diptychs of Byzantine churches and depriving Ravenna of autocephalous status, returning it to papal jurisdiction. Constantine IV abandoned the policy of monothelitism and summoned the Third Council of Constantinople in 680, to which Pope Agatho sent a representative. The council returned to the Chalcedonian Creed, condemning Pope Honorius and the other proponents of monothelitism. Over the next ten years, reconciliation increased the power of papacy: the church of Ravenna abandoned its claim to independent status (formerly endorsed by Constans II), imperial taxation was lessened, and the right of papal confirmation was delegated from Constantinople to the Exarch of Ravenna. It was during this period that the Papacy began "thinking of the Universal Church not as the sum of individual churches as the East did, but as synonymous with the Roman Church".