Stephanos of Byzantium - Ethnika
Kreston: a city of Thrace. It seems to be the Kreston in Herodotus, book 1. Lykophron: ‘to swear also by the god of Krestone’. A citizen is a 'Krestonaios', in Pindar. Rianos says they themselves are 'Krestonioi'. Hekataios says they themselves are 'Krestones' in Europe. Also 'Krestonikon' as the possessive.
Stephanos excerpt (left) is aligned with matched Herodian passages (right). Colors indicate corresponding overlap spans.