Stephanos of Byzantium - Ethnika
Obarenoi: a part of Armenia lying beside the Kyros river, which runs parallel to the Euphrates. Kouadratos too mentions them in book six of his Parthika: ‘Beside the Kyros river dwell the Obarenoi and Otenoi, who are a large part of Armenia.’
Stephanos excerpt (left) is aligned with matched Herodian passages (right). Colors indicate corresponding overlap spans.