At the time of the Roman conquest, Gaul was a mosaic of more than 60 peoples. Each had its own territory, its capital (oppidum), and its own system of government.

Map of the different Gaulish tribes at the time of the conquest.
🏛️ Central and Eastern Gaul: the powerhouses
- The Aedui (Burgundy): Allies of Rome. Their capital was Bibracte (on Mont Beuvray). They controlled trade between the Rhône and the Loire.
- The Arverni (Auvergne): The tribe of Vercingetorix. Powerful warriors, their capital was Gergovia (near Clermont-Ferrand).
- The Sequani (Jura/Doubs): Enemies of the Aedui, they lived around Vesontio (Besançon).
- The Carnutes (Beauce): They held the sacred forest where all the druids of Gaul gathered. Their main town was Cenabum (Orléans).
🛶 Northern and Western Gaul: the unconquered
- The Parisii (Île-de-France): Settled along the Seine, they gave their name to Paris (Lutetia).
- The Veneti (Brittany): Masters of the ocean, they possessed a fleet of oak ships capable of withstanding storms. Caesar had to build special ships to defeat them.
- The Remi (Champagne): Based in Durocortorum (Reims), they were Caesar’s most loyal allies throughout the war.
🏺 The South: the “Provincia”
Southern Gaul had already been under Roman control since 121 BCE. It was simply called “The Province” (which later gave the name Provence).
- The Allobroges (Savoy/Dauphiné): Around Vienne, they were already integrated into the Roman world, though they frequently revolted.
⚔️ Constant tensions
Why didn’t they get along?
- Power rivalries: The Aedui and the Arverni competed for dominance over all of Gaul.
- The client system: Smaller tribes placed themselves under the protection of larger ones, creating rival blocs.
- Roman influence: By allying with certain tribes (like the Aedui), Rome fueled jealousy and resentment among others.
🧠 Key takeaways
- Aedui = Burgundy (Allies of Rome)
- Arverni = Auvergne (Resisters)
- Parisii = Paris
- The division between tribes allowed Caesar to conquer Gaul piece by piece
📸 Image credits
- Map of Celtic Gaul — Treanna, CC BY 2.5, via Wikimedia Commons