The Annals of St Bertin

Annales Bertiniani, or The Annals of St. Bertin, are late Carolingian, Frankish annals that were found in the monastery of St. Bertin, after which they are named. Their account is taken to cover the period 830-82, thus continuing the Royal Frankish Annals (741–829), from which, however, it has circulated independently in only one manuscript.  The Annals of St. Bertin are one of the principal sources of ninth-century Francia, and are particularly well-informed on events in the West Frankish sphere of Charles the Bald. The Annales Fuldenses are usually read as an East Frankish counterpart to their narrative.