Rugians
The
Rugians were an eastern
tribe who began moving south into the
Silesian
uplands in avoidance of burgeoning
Balt expansion. They eventually
settled on the edge of the
Steppes, but were absorbed by the advancing
Huns. Re-emerging from the retreating Huns some 50 or 60 years later,
they found themselves in a position to settle
Bohemia, recently vacated
by the
Marcomanni.
This article incorporates some information taken from
http://www.hostkingdom.net/ with permission.