History of the Peloponnesian War

Now this Teres, the father of Sitalces, was the first who founded the great kingdom of the Odrysae on a larger scale than those in the rest of Thrace;

for indeed a large part of the Thracians are independent. This Teres is not at all connected with Tereus who married from Athens Procne, the daughter of Pandion; nor were they of the same part of Thrace. The latter lived in Daulis, a part of what is now called Phocis, which was then inhabited by Thracians. It was in this land that the women perpetrated the [cruel] deed to Itys, and by many of the poets, when they mention the nightingale, it is called the Daulian bird. Besides, it is probable that Pandion should have formed the connexion for his daughter [with one who lived] at that distance, with a view to mutual succour, rather than at the distance of several days' journey, [as it is] to the Odrysae. On the other hand, Teres, besides not having the same name, was the first king of the Odrysae that attained to any power.