Stephanos of Byzantium - Ethnika
Kreston: a city in Thrace. It seems to be the 'Kreston' in Herodotus. Lykophron: 'to swear by the god of Krestone too'. The citizen is 'Krestonaios' in Pindar. Rhianos says that they are 'Krestonioi'. Hekataios, in his Europe, calls them 'Krestones'. And 'Krestonikon' is the possessive.
Stephanos excerpt (left) is aligned with matched Herodian passages (right). Colors indicate corresponding overlap spans.