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Austrasia

Kingdom within Frankish empire (511–751)

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Through Historical region and Main (river)

Austrasia and Neustria along with Aquitaine and Burgundy to their south, formed the basis of subdivisions into which the Frankish Merovingian dynasty divided their realm. In the 8th and 9th centuries, their successors in the Carolingian dynasty, had their original powerbase in Austrasia. These two Frankish dynasties did not always have a single ruling monarch over the whole Frankish realm, and already by 561, Austrasia was ruled as a separate kingdom within the Frankish realm by the Merovingian king Sigebert I (561–575). Kings often allowed different family members to rule sub-kingdoms, and these were sometimes in conflict with each other, despite the underlying continuity of the overall Frankish state.

In the 843 Treaty of Verdun Austrasia was divided into two parts, with the parts east of the Rhine becoming a single East Francia kingdom together with the non-Frankish lands of the Saxons, Thuringians, Bavarians and Allamani, while in Gaul west of the Rhine forming the northernmost part of a new kingdom of Middle Francia which stretched to Italy. This kingdom was further divided in the Treaty of Prüm (855) and Austrasia became the realm of king Lothair II, whose name gave rise to the new term Lotharingia. Lotharingia was divided by the Treaty of Meerssen (870), but reunited by the Treaty of Ribemont (880), which also brought it under east Frankish rule. During the 9th century, Austrasia was still considered as one of the main regions (stem lands) within the Carolingian Empire, surrounded by Alamannia (to the south), Bavaria (to the south-east), Thuringia (to the north-east), and Saxony (to the north), as attested by the Royal Frankish Annals, and the Annals of Saint Bertin, that mentions not only Austrasia, but also Autrasians.

In time, central Austrasia was more frequently designated as Lotharingia, that became the prevailing term for those regions, while eastern parts of Austrasia came to be known as Franconia.

Etymology

The name Austrasia is not well attested in the Merovingian period. The first surviving record of the term is by Gregory of Tours, writing in about 580. It was later used by Aimoin of Fleury around 1000. It is presumably the latinization of an Old Frankish name, reconstructed as *Oster-rike ("Eastern Kingdom"). As with the name Austria, it contains the word for "east", and means "eastern land". The term designated the original territory of the Franks in contrast to Neustria, which apparently meant the "(new) western land".

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