The last crown
(Book)

"While Olav Tryggvason reclaims the throne of Norway and baptizes the land by blood, King Sven in Denmark is filled with rage at his once comrade. Not only does Olav threaten Sven’s hold on Norway, but his hold on his own wife -- the woman with two crowns, three sons, and a heart long spoken for. Swietoslawa, the Bold One. Meanwhile, those Swietoslawa trusts most -- Astrid, her sister, Sigvald, her brother-in-law and head of the Jomsvikings, and even her own son, Olaf -- take shocking, selfish action, with consequences that will reverberate for years to come. For the storm of unrequited love destroys all in its path."--,FantasticFiction.com.