Once upon a time, when Constans was Emperor in Byzantium, there lived a king called Kubrat on the shores of the Sea of Azov. In due course he died, leaving five sons behind him, whom he bade live in concord together. But the brothers in a short time quarrelled, as princes often do, and, dividing the inheritance between them, departed each his own way, bearing his portion of the people with him. The eldest brother alone, Baian, remained where he was born; the second brother, Cotrag, crossed the Don, to the northward, and lived on the farther bank; the fourth brother moved far to the westward, and, crossing the Danube, came to Pannonia, where he fell under the domination of the Avars; the youngest wandered even farther, and ended his days in the Pentapolis of Ravenna. But the third brother, whose name was Asperuch, crossed the Dnieper and the Dniester and settled on the banks of the Lower Danube.