John Broughton 
Ulf’s Tale [EPUB ebook] 

In the beginning of the bloody 11th century, young Ulf is taken hostage by King Aethelred.
While treachery and plotting threaten uneasy alliances, and ambitious rivals attempt to seize power for themselves, Ulf learns to enjoy his new life of luxury and opportunity.
When his own life is threatened, Ulf sets on a quest to bring peace to the Baltic states. But can he overcome divided loyalties and religious clashes, and make the choice between power and morality?