''According to Jordanes, the Goths originated on an island called Scandza (Scandinavia), from where they emigrated by sea to an area called Gothiscandza under their king Berig.[33] Historians are not in agreement on the authenticity and accuracy of this account.[34][35][36][37][38][39][40][41] Most scholars agree that Gothic migration from Scandinavia is reflected in the archaeological record,[42] but the evidence is not entirely clear.[1][43][44] Rather than a single mass migration of an entire people, scholars open to hypothetical Scandinavian origins envision a process of gradual migration in the 1st centuries BC and AD, which was probably preceded by long-term contacts and perhaps limited to a few elite clans from Scandinavia.''

They were most likely from Scandinavia though and this is accepted by a large amount of historians, and there isn't much evidence for them emigrating from anywhere else.