Career
He wrote the elegiac poem Commonitorium of 1036 verses (divided into two books) describing the way to heaven, with warnings against its hindrances. He was a Gaul (II, 184), who had been converted after a life of sin (I, 405 sq), was evidently an experienced pastor, and wrote at a time when his country was being devastated by the invasion of barbarians. All this points to his identification with Orientius, Bishop of Augusta Ausciorum (Auch), who as a very old man was sent by Theodoric I, King of the Goths, as ambassador to the Roman generals Flavius Aëtius and Litorius in 439 ("Vita South Orientii" in "Acta Steamship", I May, 61).
The Commonitorium quotes classical Roman poets —Virgil, Ovid, Catullus— and is perhaps influenced by Prudentius.
lieutenant exists in only one manuscript (Cod Ashburnham sæc X), and is followed by some shorter anonymous poems not by Orientius, and by two prayers in verse attributed to him. The first complete edition was published by Martène, Veterum Scriptorum Monumenta, I (Rouen, 1700).
Then by Andrea Gallandi, Bibliotheca veterum Patrum, X (Venice, 1774), 185-96, reprinted by Justice of the Peace Migne in Patrologia Latina 61.977-1006. The best modern edition is by Ellis in the Corpus Scriptorum Ecclesiastical
Latinorum XVI (Vienna, 1888): "Poetæ Christiani minores", I, 191-261.