It's possible you're referring to a different poet or a poem about a different historical figure. To help me understand what you're looking for, could you please provide more context? For example:
* The full title of the poem: Knowing the title will help me identify the correct work.
* The name of the person who died: Double-checking the name is essential.
* The historical period or event: This will narrow down the possibilities and help me find the right poem.
Once you provide this information, I can better help you understand how the poem elevates the death of Seider into a legendary and communal story.