Shapur's), the high priest includes the same regions (together with Georgia, Albania, Syria and the Pontus) in his list of provinces of the antonymic Aneran. Eran also features in the names of the towns founded by Sassanid dynasts, for instance in Eran-xwarrah-sabuhr "Glory of Eran (of) Shapur". It also appears in the titles of government officers, such as in Eran-amargar "Accountant-General (of) Eran" or Eran-dibirbed "Chief Scribe (of) Eran".

The term Iranian appears in ancient texts with diverse variations. This includes Arioi (Herodotus),