Treviri

The Treveri or Treviri were a Belgic tribe who inhabited the lower valley of the Moselle from around 150 BCE, if not earlier, until their eventual absorption into the Franks. Their domain lay within the southern fringes of the Silva Arduenna (Ardennes Forest), a part of the vast Silva Carbonaria, in what are now Luxembourg, southeastern Belgium and western Germany; its centre was the city of Trier (Augusta Treverorum), to which the Treveri give their name.Celtic in language, according to Tacitus they claimed Germanic descent.

Although early adopters of Roman material culture, the Treveri had a chequered relationship with Roman power. Their leader Indutiomarus led them in revolt against Julius Caesar during the Gallic Wars; much later, they played a key role in the Gaulish revolt during the Year of the Four Emperors. On the other hand, the Treveri supplied the Roman army with some of its most famous cavalry, and the city of Augusta Treverorum was home for a time to the family of Germanicus, including the future emperor Gaius (Caligula). During the Crisis of the Third Century, the territory of the Treveri was overrun by Germanic Alamanni and Franks and later formed part of the Gallic Empire.

Under Constantine and his 4th-century successors, Augusta Treverorum became a large, favoured, rich and influential city that served as one of the capitals of the Roman Empire (together with Nicomedia (present-day İzmit, Turkey), Eburacum (present-day York, England), Mediolanum (present-day Milan, Italy) and Sirmium). During this period, Christianity began to succeed the imperial cult and the worship of Roman and Celtic deities as the favoured religion of the city. Such Christian luminaries as Ambrose, Jerome, Martin of Tours and Athanasius of Alexandria spent time in Augusta Treverorum.

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