Cyril wrote extensively and was a leading protagonist in the Christological controversies of the later 4th , and 5th centuries .
Cyril of Alexandria was the Bishop of Alexandria when the city was at its height of influence and power within the Roman Empire .
Cyril of Alexandria wrote extensively and was a leading protagonist in the Christological controversies of the later 4th , and 5th centuries .
Cyril of Alexandria was the Bishop of Alexandria when the city was at its height of influence and power within the Roman Empire .