Phocaea founds the colony of Massilia.
400 BCE – 300 BCE
Founding of Lutetia.
Brennus of the Senones defeats the Romans at Allia, and subsequently sacks Rome.
Rome signs a peace treaty with the Senones tribe.
Gauls of the Insubres and Boii tribes defeat the Romans at Arretium.
Rome decisively defeats the Senones at Picenum.
Gauls attack the sanctuary of Delphi.
Rome conquers Cisalpine Gaul (modern-day Provence, France).
Gallia Narbonensis becomes a Roman province.
58 BCE – 51 BCE
Julius Caesar’s conquest of Gaul.
Caesar attacks the Helvetii while on migration and defeats them.
Julius Caesar invades Gaul. Roman influence on the European tribes begins in earnest.
A Roman army under Caesar narrowly defeats an army of Nervii, Atrebates, and Viromandui.
The navies of Rome and the Veneti Gauls clash resulting in a Roman victory. This is the first recorded naval battle in the Atlantic Ocean.
54 BCE – 53 BCE
Ambiorix of the Eburones tribe destroys around 9,000 Roman soldiers at Atuatuca.
Julius Caesar holds a council of Gallic tribes in Lutetia.
Julius Caesar is defeated at Gergovia by Vercingetorix.
After becoming trapped and besieged at Alesia, Vercingetorix surrenders to Caesar.
Caesar’s siege and capture of Uxellodunum end of the Gallic War.
The Allobroges unsuccessfully rise against Roman rule in southern Gaul.
The Belgic Morini and the Celts of Aquitania unsuccessfully rise against Roman rule.
King Chrocus of the Alemanni invades Gaul and destroys the region.
406 CE – c. 420 CE
Vandals cross the Rhine and invade Gaul, migrate to Spain.
Hun invasions force Vandals to cross the Rhine into Gaul.
Vandals, Suevi, and Alans invade Gaul.
Hun invasion of Gaul; Battle of the Cataluanian Plains (Battle of Chalons).
Clovis of the Franks defeats the Romans in Gaul. Founding of the Frankish kingdom.
The Gaulish Polytheism website was created to unify all the different Gaulish Traditions in one place.