Crestonia (or
Crestonice) was an ancient region immediately north of
Mygdonia. The
Echeidorus river, which flowed through Mygdonia into the
Thermaic Gulf, had its source in Crestonia. It was partly occupied by a remnant of the
Pelasgi, who spoke a different language from their neighbors (
Thracians and
Paeonians); later the
Greeks. The main towns of Crestonia were Creston (
Crestone) and "Gallicum" (Romanized name). The region, along with Mygdonia, was held by Paeonians for a time, later by Thracians. At the time of the invasion of
Xerxes I of Persia, Crestonia was ruled by an independent Thracian prince (
Herodotus, 8. 116). By the time of the commencement of the
Peloponnesian war, Crestonia had been annexed to the kingdom of
Macedonia.