Acacius
5. Reader at (A. D. 390), then the Bishop of Melitene (A. D. 431). He wrote A. D. 431, against Nestorius. His zeal led him to use expressions, apparently savouring of the contrary heresy, which, for a time, prejudiced the emperor Theodosius II. against St. Cyril. He was present at the Oecumenical Council of Ephesus A. D. 431, and constantly maintained its authority. There remain of his productions a Homily (in Greek) delivered at the Council, (see Conciliorum Nova Collectio à Mansi, vol. v. p. 181,) and a letter written after it to St. Cyril, which we have in a Latin translation. (Ibid. pp. 860, 998.)
From William Smith (ed.), Dictionary of Greek and Roman Biography and Mythology. Text provided under a CC BY-SA license by Perseus Digital Library, http://www.perseus.tufts.edu, with funding from the National Endowment for the Humanities and Tufts University. Data accessed from https://github.com/PerseusDL/canonical-pdlrefwk/ on 17 October 2026.