Stephanos of Byzantium - Ethnika
Kossos: a mountain in Bithynia, as per Demosthenes, in book 10 of his Bithyniaka. The inhabitants are 'Kossaioi'.
AI translation — gpt-5.5; Gabe v3
Stephanos excerpt (left) is aligned with matched Herodian passages (right). Colors indicate corresponding overlap spans.