 Živković pointed out that Porga could not be Borna (r. 810–821) or Branimir (879–892), with whom the older generation of scholars have tried to identify him.The change of noble personal names, which shifted from Iranian (or another language of different origin) to Slavic, simply could not have happened in a mere few generations.As such, the time of the White Croat conquest of the Avars is estimated to be during the 7th, and not 9th, century.