pmmg
Myth Weaver
It’s set in Sweden and Denmark, but is an Anglo Saxon text, and uses Anglo Saxon conventions of storytelling, so far as I’ve researched - I don’t claim to be an expert here but as I said above, from what I understand, there were many earlier migrants from these lands to the British Isles, long before what we refer to as the Viking Age. There’s no old Norse in the poem. Tolkien was a professor of Anglo Saxon at Oxford and worked on Beowulf for a long time.
Okay, I would assume it was either brought over by contact, or someone went there, wrote it down and brought it back. Good think too...now I only have to worry about Ogre's in one part of the world.