 "Shapur" was a popular name in Sasanian Iran, being used by three Sasanian monarchs and several notables of the Sasanian era and its later periods.The name is derived from Old Iranian "*xšayaθiya.puθra" ("son of a king") and initially must have been a title, which became, at least in the late 2nd century AD, a personal name.The name appears in the list of Arsacid kings in some Arabic-Persian sources, however, this is anachronistic.