All these bishops without exception signed the Council 's decisions in favor of the Orthodox position of Dyophysitism , also backed by the bishop of Rome .
In 451 , six Epirote bishops attended the Fourth Ecumenical Council at Chalcedon , including Bishop Atticus of Nicopolis .
All these bishops without exception signed the Fourth Ecumenical Council 's decisions in favor of the Orthodox position of Dyophysitism , also backed by the bishop of Rome .
In 451 , six Epirote bishops attended the Fourth Ecumenical Council at Chalcedon , including Bishop Atticus of Nicopolis .