Toumanoff, Cyril. The Arsacids. Encyclopædia Iranica. excerpt:"Whatever the sporadic suzerainty of Rome, the country was now a part-together with Iberia (East Georgia) and (Caucasian) Albania, where other Arsacid branched reigned-of a pan-Arsacid family federation. Culturally, the predominance of Hellenism, as under the Artaxiads, was now followed by a predominance of "Iranianism," and, symptomatically, instead of Greek, as before, Parthian became the language of the educated"
