A Saint and patriarch. He was the 25th patriarch of Alexandria (446-454). Our best reference about his life is the Coptic version of the History of the Patriarchs. He was a disciple of Cyril of Alexandria and a vigorous opponent of Nestorian doctrines.
Eutyches also argued against the Nestorian parties but he was condemned by a synod of bishops headed by Flavian, Bishop of Constantinople, on 8 November 448. Eutyches asked for support from Dioscorus. A synod was assembled in Ephesus in 449.
Here, a Christological formula based on the Twelve Anathemas of Cyril was edited. But this synod caused confusion. The teaching of Dioscorus is Orthodox, but at Chalcedon he used the same distinction as Eutyches: “I accept the phrase ‘from two natures’ but not ‘the two natures.’” Dioscorus was also a writer.
We have an encomium on Macarius Bishop of Tkow, which survives in two Coptic dialects, Sahidic and Bohairic. To him also is attributed a letter to Sapianus, another to St. Shenute, and some fragments. The Syriac tradition attributes to him several works that reflect his theological dogma.