Fakhruddin As'ad Gurgani was an 11th century poet of Persia. For other uses of this term see: Persia (disambiguation) The Persian Empire is the name used to refer to a number of historic dynasties that have ruled the country of Persia (Iran). ...
He wrote the epic Vis u Ramin. The epic may be a story from the Arsacid period. Zarrinkoub however disagrees with this view, and concludes that the story has a Pahlavi origin in the 5th century Sassanid era. The Arsacid Dynasty ruled Persia. ... Abdolhossein Zarrinkoub, prominent historian of Persian literature. ... The Pahlavi script was used broadly in the Sasanid Persian Empire to write down Middle Persian for secular, as well as religious purposes. ... Sassanid Empire at its greatest extent The Sassanid dynasty (also Sassanian) was the name given to the kings of Persia during the era of the second Persian Empire, from 224 until 651, when the last Sassanid shah, Yazdegerd III, lost a 14-year struggle to drive out the Umayyad Caliphate...
References
Jan Rypka, History of Iranian Literature. Reidel Publishing Company. ASIN B-000-6BXVT-K