Before Chalcedon
Marseille, Gaul
Also: Hilary the Layman; Hilary (correspondent of Augustine)
⚠ He was a layman, not Hilary bishop of Arles (in office 429–449, who in fact leaned towards the Marseilles side); the two share a name and must be kept apart. Schaff's introduction to Cassian in NPNF series 2, vol. 11, says plainly that this Hilary was a layman, not to be confused with his namesake the bishop of Arles. ⚠ Olson does not mention him at all; it is González who adds him.
Below: first his own position, then the church’s verdict — kept separate. A rejected opinion keeps equal weight here.
His own position
One of Augustine's defenders. González records that we know of the opposition to Augustine around Marseilles directly from two letters written to him by two of his defenders — that is, Prosper and Hilary (Augustine's Letters 225 and 226).
Threads he belongs to
Grace and Free Will
Round 1 · The Pelagian Controversy Claim One of Augustine's two defenders. ⚠ Not Hilary, bishop of Arles.