I was considering the historic situation partially in a humorous sense. Consider the point of view of the barbarians. During the Medieval, one man was another man’s barbarian.
Roman: Here they come again, from the north.
Roman propagandist/historian: From the north? Germanic tribes.
Roman, a little later: Here come some other ones, from the north.
Roman propagandist/historian: From the north? Also Germanic tribes.
Roman, a little later yet: Uh...even farther from the north.
Roman propagandist/historian: Yes, Germanic tribes, too.
To the present...
Present-day Roman propagandist/historian: this latest archeological find proves that we’re descended from ancient Nordic peoples.
;-)
The hypothetical discussion was set in the 300s, by the way (Franks, Vandals, Lombards, all). Oh, and most of us probably have some Hun genes...and more.