The Valor Of Cappen Varra by Poul Anderson

It's been said that there are many and strange shadows, memories surviving from dim pasts, in this fantastic universe of ours. Here the great Poul Anderson turned to a legend from the Northern countries, countries where even today the pagan past seems only like yesterday, to tell the story of Cappen Varra, who came to Norren an age ago, in a time and place we really can't remember anymore.