Jerome's Notice of Hilary, from On Illustrious Men

Hilary, bishop of the city of Poitiers in Aquitaine, banished to Phrygia from the synod of Béziers by the faction of Saturninus, bishop of Arles, composed twelve books against the Arians; and another book on the synods, which he wrote to the bishops of Gaul; and commentaries on the Psalms, namely the first and second, and from the fifty-first to the sixty-second, and from the one hundred and eighteenth to the last: in which work, having imitated Origen, he also added some things of his own.

There is also his little book to Constantius, which he had presented to him while living at Constantinople; and another against Constantius, which he wrote after his death; and a book against Valens and Ursacius, containing the history of the synod of Ariminum and Seleucia; and one to the prefect Sallustius, or against Dioscorus; and a book of hymns, and another of mysteries; and commentaries on Matthew; and Tractates on Job, which he translated from the Greek of Origen according to the sense; and another elegant little book against Auxentius; and some letters to various persons. Some say that he also wrote on the Song of Songs; but this work is unknown to us. He died at Poitiers, in the reign of Valentinian and Valens.