Basil of Seleucia
5th century Roman bishop and ecclesiastical writer
Who they were
Basil was Bishop of Seleucia in Isauria in the fifth century, during the fierce disputes over Monophysite teaching. In 448 he took part in the synod at Constantinople that condemned Eutyches, but the next year, probably under threats and violence, he voted for Eutyches at the so-called Robber Synod of Ephesus.
He then accepted Pope Leo's letter to Flavian and joined in condemning Eutyches and Dioscorus, and in 458 he and the other bishops of Isauria asked the emperor to uphold the decrees of Chalcedon. He probably died soon after. Many sermons on the Old Testament survive under his name, with a history of St. Thecla and of the miracles at her grave.
The miracles
The Catholic Encyclopedia does not describe any miracles or a formal cause.
Why that counted as sanctity
A fifth-century bishop and preacher who, after wavering, stood by the Council of Chalcedon.
- Catholic Encyclopedia (1913), via New Advent - Basil of Seleucia
- Wikidata Q3434480 — dates, feast day and identifiers (CC0)
- English Wikipedia — Basil of Seleucia (CC BY-SA)
Checked against the sources listed on 22 September 2026. Corrections welcome.