This book presents a rough translation of the Annals of St-Bertin (AB). The AB give a detailed record of events in the Carolingian world, covering the years 830-882. They constitute the most substantial piece of contemporary historical writing of their time, a time that was a critical one in western European history. The AB contain uniquely extensive information about Viking activities, constructive as well as destructive, and also about the variety of responses to those activities. Produced in the 830s in the imperial palace of Louis the Pious, the AB were continued away from the Court, first by Bishop Prudentius of Troyes, then by the great scholar-politician Archbishop Hincmar of Rheims. From 841 on, the AB were based in the western part of the old empire, in what became, with the Treaty of Verdun in 843, the kingdom of Charles the Bald.