“tribes are no longer imagined to have been marching for centuries at a time in ordered ranks with homogeneous ethnic compositions… The common, track-filled map of the Völkerwanderung may illustrate such [a] course of events, but it misleads. Unfolded over long periods of time, the changes of position that took place were necessarily irregular … (with) periods of emphatic discontinuity. For decades and possibly centuries, the tradition bearers idled, and the tradition itself hibernated. There was ample time for forgetfulness to do its work”.
(Noble, T; (2006), From Roman provinces to Medieval kingdoms)