Fredegarius

The Chronicle of Fredegar is the conventional title used for a 7th-century Frankish chronicle that was probably written in Burgundy. The author is unknown and the attribution to Fredegar dates only from the 16th century.

The chronicle begins with the creation of the world and ends in AD 642. There are also a few references to events up to 658. Some copies of the manuscript contain an abridged version of the chronicle up to the date of 642, but include additional sections written under the Carolingian dynasty that end with the death of Pepin the Short in 768. The Chronicle of Fredegar with its Continuations is one of the few sources that provide information on the Merovingian dynasty for the period after 591 when Gregory of Tours' the Decem Libri Historiarum finishes.

None of the surviving manuscripts specify the name of the author. The name "Fredegar" (modern French Frédégaire) was first used for the chronicle in 1579 by Claude Fauchet in his Recueil des antiquitez gauloises et françoises. The question of who wrote this work has been much debated, although the historian J. M. Wallace-Hadrill admits that "Fredegar" is a genuine, if unusual, Frankish name. The Vulgar Latin of this work confirms that the Chronicle was written in Gaul; beyond this, little is certain about the origin of this work. As a result, there are several theories about the authorship:

Fredegar is usually assumed to have been a Burgundian from the region of Avenches because of his knowledge of the alternate name Wifflisburg for this locality, a name only then coming into usage. This assumption is supported by the fact that he had access to the annals of many Burgundian churches. He also had access to court documents and could apparently interview Lombard, Visigoth, and Slavic ambassadors. His awareness of events in the Byzantine world is also usually explained by the proximity of Burgundy to Byzantine Italy.

...
Wikipedia