Aethelred, in contrast to his predecessor and successor, reigned (except for a few weeks in 1013/14) largely unchallenged for 38 years, despite presiding over a... » 

Aethelred, in contrast to his predecessor and successor, reigned (except for a few weeks in 1013/14) largely unchallenged for 38 years, despite presiding over a period that saw many Danish invasions and much internal strife. This is a biography of England's king during the Viking onslaught. «