Constantine V Copronymus
Byzantine Emperor and iconoclast against whom Theodore the Studite contended in defense of sacred images.
Preface and Praise of Sacred Scripture
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Chapter IV: The Judgments and Examples of the Fathers
— Iconoclast Emperor against whom Theodore the Studite contended
"contending in strong combat and duel with the Iconoclast Emperors Constantine Copronymus and Leo the Isaurian"