Eduard Meyer

“ OSROES (also Osdroes or Chosroes) , the Greek form of the Persian name Khosrau (see Chosroes) . The form Osroes is generally used for a Parthian king who from his coins appears to have reigned from about A.D. 106-129, as successor of his brother Pacorus. But during all this time another king, Vologaeses II. (77-147) maintained himself in a part of the kingdom. Osroes occupied Armenia, and placed Exedares, a son of Pacorus, and afterwards his brother Parthamasiris on the throne. This encroachment on the Roman sphere led to the Parthian war of Trajan. ”