PIE e: > Gmc a:

So that no one should say that I don't learn by my mistakes, I
took the rule PIE e: > ProtoGmc a: to heart and thought of 'Sue:bi'
vs. German 'Schwa:ben' If this is an example, then the rule applied
only after the first mention of the Suebi in the mid first century
BCE. But near Roskilde on Sjælland there is a Svogerslev (first
mention Suauærslæv vel sim. (which is Latin and means "or something
like that"), since I don't have the place name tome at hand),
generally thought to contain the 'Suebi' name.

Now this means, as far as I can see, that the rule e: > a: happened
both in West Germanic and North Germanic, or, preferably, if I may
use Occam once again, that the later West Germanic and North
Germanic speakers were together when it happened. Or, another
possible scenario, that the change happened among the former and
spread when they invaded the latter.

Torsten