9–12. Letters concerning the Council of Aquileia, held a.d. 381, to the bishops of the provinces of Gaul, to the Emperor Gratian and his colleagues. Two men, Palladius and Secundianus, held Arian opinions, and the former appears to have asked Gratian to convoke a General Council, pleading that he was unjustly condemned. St. Ambrose pointed out to the Emperor that such a question as the orthodoxy of two persons could be settled by a local council in Italy; and as a result, by the Emperor’s mandate, a council of Italian bishops met at Aquileia, other bishops having also permission to attend. Palladius and Secundianus were condemned, and these letters have reference to the proceedings at the council. They were probably written by St. Ambrose in the name of the council, a.d. 381.