hi! not discouraging other input on this, but FYI, you may be interested in this post from yesterday:

Who were the German tribes and where did they come from? Why do we link them together? What is the history and origin of a few of the major tribes?

edit: found a couple more that might be interesting

Where did all the Germanic tribes come from? Before they entered the Roman Empire?

How were Germanic tribes so succcessful in conquest and why they migrated so far from their places of origin?