Icelandic Mystery

There's a variety of evidence that Vikings came to America before Columbus did. Now this:

Analyzing a type of DNA passed only from mother to child, scientists found more than 80 living Icelanders with a genetic variation similar to one found mostly in Native Americans.

When they say "a type of DNA" they mean mitochondrial DNA.

Researchers are a bit puzzled, because Viking sagas make no mention of ferrying a Pocahontas type back to Iceland.

On the other hand, are we sure they included everything in their sagas?

I guess that if a Viking
found a woman to his liking,
he might ask her on his ship
for a back-to-Iceland trip.

Bored with blondes, I bet,
so he fell for a brunette!