Saint Magnus, The Last Viking2015
by Susan Peek
"Come back in time 900 years, to the fierce and desolate Northern lands, where Norsemen ruled with ax and sword. A dying king, a shocking death-wish, his heirs divided with an oath of blood ... In this fast-paced new novel by the highly popular Susan Peek, the conflict unfolds between Magnus Erlendson, a heroic young prince aflame with the love of God, and his outlawed cousin Hakon, who blames Magnus for his banishment from their kingdom....
— from OpenLibrary
2 editions at OpenLibrary