The Angrivarii (or Angrivari) were a Germanic people of the early Roman Empire, who lived in what is now northwest Germany near the middle of the Weser river. They were mentioned by the Roman authors Tacitus and Ptolemy. They were part of the Germanic alliance of Arminius and his defeat of the Romans at the Battle of the Teutoburg Forest in the 9th year of the common era. The Angrivarii lived in an area which was later called Angria (Modern German "") in the Middle Ages, which was a major part of the Carolingian Duchy of Saxony. Both names probably derive from geographical terminology. Location In his Germania Tacitus described the Angrivarii and their western neighbours the Chamavi living closer to the Rhine than "the Dulgubini and Chasuarii, and other tribes not equally famous" and east of the Frisii who lived towards the Rhine river which was the official border of the Roman Empire. The Chasuarii probably lived near the Hase river and the Ampsivarii who lived on the Ems river, and the Dulgubini probably towards the Elbe. North of all these peoples lived the Chauci, whose territory stretched to the North Sea coast. Among the more detailed mentions of the Angrivarii which Tacitus makes in his Annals, he describes them also as neighbours to the powerful Cherusci people, of Arminius. They had built a dike to mark the boundary and this was west of the Weser. Tacitus also notes in his Germania that together with the Chamavi, the Angrivarii had invaded the lands formerly held by the Bructeri to their southwest, the Bructeri having been expelled and utterly destroyed by an alliance of neighboring peoples.... The Bructeri had lived near the Ems and Lippe rivers, between the Rhine and Weser. This occurred after the battle of the Teutoburg Forest. Name and etymology The name appears earliest in the Annales and Germania of Tacitus as Angrivarii. In Greek, Ptolemy called them the Angriouarroi (), which transliterates into Latin Angrivari. In post-classical history the name of the people had a number of different spellings in addition to the ones just mentioned. The name Angrivarii can be segmented Angri-varii meaning "the men of Engern", parallel to Ampsi-varii, "the men of the Ems". Engern, their region, is related to a word for meadows, as in modern German "", and appears as a component in placenames around Germany. Julius Pokorny derives the first element