The Tricasses were a Gallic

Gauls

The Gauls were a Celtic people living in Gaul, the region roughly corresponding to what is now France, Belgium, Switzerland and Northern Italy, from the Iron Age through the Roman period. They mostly spoke the Continental Celtic language called Gaulish....

 tribe which lived along the Seine

Seine

The Seine is a -long river and an important commercial waterway within the Paris Basin in the north of France. It rises at Saint-Seine near Dijon in northeastern France in the Langres plateau, flowing through Paris and into the English Channel at Le Havre . It is navigable by ocean-going vessels...

 in what is now Champagne. They gave their name to Troyes

Troyes

Troyes is a commune and the capital of the Aube department in north-central France. It is located on the Seine river about southeast of Paris. Many half-timbered houses survive in the old town...

, which bore the name Augustobona during the Roman period and served as the capital of the Tricasses. Administratively they were attached to Gallia Lugdunensis

Gallia Lugdunensis

Gallia Lugdunensis was a province of the Roman Empire in what is now the modern country of France, part of the Celtic territory of Gaul. It is named after its capital Lugdunum , possibly Roman Europe's major city west of Italy, and a major imperial mint...

. Their neighbours were the Suessiones

Suessiones

The Suessiones were a Belgic tribe of Western Belgium in the 1st century BC, inhabiting the region between the Oise and the Marne, based around the present-day city of Soissons...

 and Remi

Remi

The Remi were a Belgic tribe of north-eastern Gaul in the 1st century BC. They occupied the northern Champagne plain, on the southern fringes of the Forest of Ardennes, between the rivers Mosa and Matrona , and along the river valleys of the Aisne and its tributaries the Aire and the Vesle.Their...

 to the north, the Leuci

Leuci

The Leuci were an ancient Gallic tribe, traditionally considered to have lived the southern part of what is now Lorraine. They are mentioned by Julius Caesar as forming part of the people supplying wheat to the Roman army in 58 BC.- See also :...

 to the south, and the Senones

Senones

The Senones were an ancient Gaulish tribe.In about 400 BC they crossed the Alps and, having driven out the Umbrians settled on the east coast of Italy from Forlì to Ancona, in the so-called ager Gallicus, and founded the town of Sena Gallica , which became their capital. In 391 BC they invaded...

to the west.