what are the cycles of telamon ?

[Centurio Nixalsverdrus]

I have read a theroy that the Nibelungen are based on the events around Arminius and his battle against the Romans in the Teuteburger Forest..

Yes I've read that too. Arminius is Siegfried, and the Lindwurm (uhh, the Dragon I think in English) is supposed to be the three legions on the march. Hagen von Tronje could be one of those who betrayed and killed him later. Also the thing with Kunigunde (Thusnelda) who revenged him later could be inspired from his own kidnapping of Thusnelda.

Edit: Anyone seen "The 13th Warrior"? This movie is based on a novel by Michael Chrichton, and this is based on Beowulf. And when Beowulf = Nibelungen, than... remember that the vikings in the beginning said they were harassed by a Dragon, what was later revealed as the Neanderthalians on the march...