Dear Ali, saying Ismail claimed "Royal Persian Descent" does not seem to be correct. Ismail, as we know, was radically Shiite and claimed descendance from Ali ibn Talib, who wasn't Persian but Arab. Also, the "royal Persian descent" as it's known in times of Safavis was from time of Sassanids, who according to Islam were heretics and Ismail could not have possibly been proud of them. If at all, Ismail was a descendant of Akkoyunlu royalty.