DONO, patriarch of ANTIOCH. - He was the nephew of the patriarch Giovanni, whom he succeeded in 441–42 in the see of Antioch. He was educated in a monastery near Jerusalem under the guidance of St. Eutimio. Elected bishop, he distinguished himself by his firm orthodoxy, but at the same time showed little understanding and prudence. He was the first to expose the Monophysite error of Eutiche in a rather forceful letter to the emperor Teodosio, but then gradually allowed himself to be swept away by the heretical current led by Dioscuro. At the so-called Robber Council of Ephesus in 449, he even went so far as to subscribe to the rehabilitation of Eutiche and the deposition of Eusebio di Dorilea and Flaviano di Costantinopoli, as well as of some of his suffragan bishops, all champions of orthodoxy. Shortly afterwards, however, he himself was deposed, and, having withdrawn to his monastery, died there in obscurity.
BIRL.: Tillemont, XV, ed. Venezia 1732, p. 480 ff.; Hefele-Leclercq, II, pp. 584 ff., 753; Pl. 55, 701–38; G. Bardy, in Fliche-Martin-Fruta, IV, p. 217 ff. Agostino Amore