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Michael I(Michael Rangabe), d. c.845, Byzantine emperor (811–13), son-in-law of Nicephorus I. He supported orthodoxy against iconoclasm and recalled Theodore of StudiumTheodore of Studium, Saint
, 759–826, Byzantine Greek monastic reformer, also called St. Theodore the Studite. As an abbot he was early exiled for opposing the marriage of Emperor Constantine VI to his mistress Theodota.
..... Click the link for more information. from exile. He recognized (812) Charlemagne's claim as emperor. Defeated by the Bulgars, he was deposed and exiled. Leo V succeeded him.