Thracia, in the heart of Licinius’ domain, appeared likely to be conquered by Daia’s lightning advance before its ruler could even move an army eastward, but fortunately the invasion was stopped for more than a week by the walls of Heraclea, some fifty miles west of Byzantium. The delay gave Licinius time to bring up his troops and, in the battle that followed, Daia’s failure to bring adequate supplies and weapons with him on the forced march across the Galatian uplands told heavily against him. As a result, Licinius’ Illyrian veterans put Daia’s forces to flight and Daia himself was destroyed.
Reading reports of the downfall of Maximin Daia brought to him by the Imperial Post, Constantine found much to praise in the rapidity with which Licinius had opposed Daia. But of what followed the victory, he could hardly approve. First, Licinius ordered the destruction of Daia’s young children, a boy of eight and a girl of seven. Two other refugees, Lady Valeria, the widow of Galerius, and the Empress Prisca, who being Christians had been in hiding from persecution in Syria, now came to Licinius’ new court at Nicomedia, expecting to be welcomed there, since Galerius had raised Licinius first to the rank of general and then to the purple of a Caesar and Augustus. Instead, they were harshly treated and only managed to escape alive with the help of the Christians of Nicomedia.
Frankish rebellion
Busy putting down the Frankish rebellion during the rest of the winter and early spring, Constantine heard of these melancholy events, but could do nothing at the moment about them. He had thought that Licinius had been convinced by his example of how effectively people could be ruled by the application of justice and fair treatment to all.
But it was only too apparent now that, suddenly finding himself ruler of more territory than he had imagined could ever be his, the Emperor of the East had succumbed to the same lust for power that had brought about the downfall of Daia, Maxentius and Maximian. At the moment, however, each of the two remaining Augusti where once there had been six needed each other, so the situation was left at that.
Historical Ottoman 