Rodwulf was a Scandinavian chieftain who joined the Ostrogoths in Ravenna. He got tired of his own people and travelled south in order to have some adventure. He is described by Jordanes in Getica and based on similarity of names (he was from the Rani) he is supposed to have come from the province of Bahusia in western Sweden (where Ranrike was situated).
He was far from the only warrior to have left Scandinavia to join the Goths. From this time there is plenty of Roman gold that has been found in Sweden. Moreover, after the Ostrogothic defeat a large number of surviving Ostrogoths were allowed to return home of which many are said to have returned to Scandinavia.