 Croatian historian and archaeologist Ante Milošević proposed a new thesis, that the differences in names in chapters 30 and 31 of "De Administrando Imperio" are due to differences in the folk tradition.According to Milošević, chapter 30 resembles the tradition of the Longobards, whose first legendary rulers – Godin, Peron, and Klafon – were not actual historical figures, but deities equivalent to Norse Odin and Balto-Slavic Perun.In chapter 30, Porin – like Longobard Peron, although probably intended as Porga – wasn't an actual ruler name, but the Slavic deity Perun.