Stephanos of Byzantium - Ethnika
Kydna, a city of Macedonia. Theagenes in his Makedonika. It is, through a corruption of the name, called Pydna. The ethnic adjective is Pydnaios. There is also the Kydnos, a river of Cilicia.
Stephanos excerpt (left) is aligned with matched Herodian passages (right). Colors indicate corresponding overlap spans.