Difference between Siegfried and Siegfried

What is the difference between Siegfried and Siegfried?

Siegfried as a proper noun is (germanic mythology) hero of the nibelungenlied who defeated the icelandic queen. while Siegfried as a proper noun is (germanic mythology) hero of the nibelungenlied who defeated the icelandic queen.

We hope you now know whether to use Siegfried or Siegfried in your sentence.