History of the Peloponnesian War

Now this Teres, the father of Sitalces, was the first to found the great kingdom of the Odrysians, which extended over the larger part of Thrace;

for a considerable portion of the Thracians are independent. This Teres is not in any way connected with Tereus who took from Athens to be his wife Procne the daughter of Pandion, nor indeed did they come from the same Thrace. Tereus dwelt at Daulia in the land now called Phocis, which was then occupied by Thracians, and it was in that land that the women[*](The women, i.e. Procne and Philomela, who murdered Itys, son of Procne.) perpetrated their deed upon Itys. In fact many of the poets, when they refer to the nightingale, call it the bird of Daulia. Besides it was natural for Pandion to contract the marriage alliance for his daughter at so short a distance as Daulia with a view to mutual protection, rather than among the Odrysians, who are many days' journey distant. Teres, however, whose name was not the same as the other's, was the first king to attain great power among the Odrysians.