Theodosius (21) , a fanatical Monophysite monk. Having been expelled from his monastery for some crime, he repaired to Alexandria, where he stirred up strife, was scourged, and paraded round the city on camelback as a seditious person (Evagr. H. E. ii. 5). He attended the council of Chalcedon in 451, apparently as one of the ruffianly followers of Barsumas. On the termination of the synod Theodosius hastened to Jerusalem, complaining that the council had betrayed the faith, and circulating a garbled translation of Leo's Tome (Leo Magn. Ep. 97 [83]). His protestations were credited by a large number of the monks and people, and having gained the ear of the empress dowager Eudocia, the former patroness of Eutyches, who had settled at Jerusalem, he so thoroughly poisoned the minds of the people of Jerusalem against JUVENAL as a traitor to the truth that they refused to receive him as their bishop on his return from Chalcedon, unless he would anathematize the doctrines he had so recently joined in declaring. On his refusal the malcontents attempted his assassination, and he barely escaped with his life to Constantinople. After Juvenal's flight Theodosius was ordained bp. of Jerusalem in the church of the Resurrection, and at once proceeded to ordain bishops for Palestine, chiefly for those cities whose bishops had not yet returned from Chalcedon. A reign of terror now began in Jerusalem. The public prisons were thrown open and the liberated criminals were employed to terrify by their violence those who refused communion with Theodosius. Those who refused to anathematize the council were pillaged and insulted in the most lawless manner. Finally, the emperor Marcian interposed, and issued orders to Dorotheus to apprehend Theodosius, who, however, managed to escape to the mountain fastnesses of Sinai (Labbe, iv. 879). What ultimately became of him is unknown. Evagr. H. E. ii. 5; Coteler. Mon. Graec. i. 415 seq.; Theophan. Chron. p. 92; Leo Magn. Ep. 126 [157]; Labbe, Concil. iv. 879 seq.; Niceph. H. E. xv. 9; Fleury, H. E. livre 38; Tillem. Mém. eccl. xv. 731 seq.; Le Quien, Or. Christ. iii. 164).
[E.V.]