 Complete the following phrase:  The general outline of the story told in , about the death of Etzel and Herches sons, is often considered to be one of the oldest components of the legend of Theodoric. It is first alluded to in the Nibelungenklage, a poem likely written shortly after the Nibelungenlied c. 1200. Older scholarship proposed a Gothic song as the earliest version. According to this theory, the song was inspired by the 