Res Gestae

In the consulship of Datianus and Cerealis, while all provisions in Gaul were being made with very careful endeavour, and dismay due to past losses halted the raids of the savages, the king of Persia was still encamped in the confines of the frontier tribes; and having now made a treaty of alliance with the Chionitae and Gelani, the fiercest warriors of all, he was on the point of returning to his own territories, when he received Tamsapor’s letter, stating that the Roman emperor begged and entreated for peace.