monastic reformer. He became Abbot of Saccudium (in NW Asiatic Turkey) in 794. In 796 he opposed the adulterous marriage of the Emp. Constantine VI; he was banished but recalled a year later. In 799 he and most of his community went from Saccudium, which was exposed to Saracen raids, to the old monastery of Studios (q.v.) at Constantinople; under Theodore it became the centre of E. monasticism. When Leo V became Emperor in 813, he revived an Iconoclastic policy and exiled Theodore, its most vigorous opponent. After Leo's assassination in 820, Theodore was recalled, but as image worship was prohibited in Constantinople, he spent most of his time on the peninsula of Tryphon. His writings include a ‘Short’ and a ‘Long Catechesis’, an Exposition of the Liturgy of the Presanctified, and several spiritual orations. He is widely venerated in the E. Feast day, 11 Nov.
Subjects: Christianity — Medieval and Renaissance History (500 to 1500).