M C Scott 
Raven Feeder (Storycuts) 

Set during the turmoil of the brutal Christian conversion of the Norse, this short story is the coming of age tale of Arne Thoreson. Thoreson, whose condemnation of Christianity is born out of respect for his lineage, is the son of Thore, feeder of ravens, and Ranveig, a Singer witch. When adversity befalls Orkney, Arne must not only assert his defiant rejection of Christianity, but take decisive action to thwart the Christ-Wolf, Olaf Trygvason.
Part of the Storycuts series.