Sword Song is the fourth and final epic in Bernard Cornwell’s "The Saxon Stories" series. (I didn’t realise it was part of a series, so I’ll go back and read the others.) The story is based around a 9th century lord, Lord Uhtred, who is caught up in the battle for the kingdom of Wessex (the southern Saxon kingdom of England, the northern kingdom was under Danish rule).
Vikings had occupied London and had called upon Lord Uhtred to join them and while at the same time, Lord Uhtred is oath bound to King Alfred. The story progresses to tell of his struggle between the two powers and how he, alone, will shape the future of England.

