Strabo Geography 13.1.33

[33] Such, are the places on the sea. Above these lies the Trojan Plain, which extends inland for many stadia in the direction of the east as far as Mt. Ida. The part of this plain alongside the mountain is narrow, extending on one side towards the south as far as the region of Scepsis, and on the other towards the north as far as the Lycians of Zeleia. This is the country which the poet makes subject to Aeneias and the sons of Antenor, calling it Dardania; and below this is Cebrenia, which is level for the most part and lies approximately parallel to Dardania; and in it there was once a city called Cebrene. ¹ Demetrius suspects that the territory of Ilium subject to Hector extended inland from the naval station as far a Cebrenia, for he says that the tomb of Alexander ² is pointed out there, as also that of Oenone, who, according to historians, had been the wife of Alexander before he carried off Helen. And, he continues, the poet mentions ³ after whom, as one may suppose, the country was named—or the city too, which is more plausible; and Cebrenia extends as far as the territory of Scepsis; and the Scamander, which flows between, is the boundary; and the Cebreni and Scepsians were always hostile to one another and at war until Antigonus settled both peoples together in Antigonia, as it was then called, or Alexandreia, as it is now called; now the Cebreni, he adds, remained with the rest in Alexandreia, but the Scepsians, by permission of Lysimachus, went back to their homeland.