Senones

The Senones or Senonii were an ancient Gallic tribe dwelling in the Seinebasin, around present-day Sens, during the Iron Age and the Roman period. The Senones remained an independent people, ruled by a king and a senate, until the Roman conquest of Gaul. They joined the revolts against Caesar, among them the rising of Vercingetorix in 52 BC. Under Roman rule they formed a civitas of Gallia Lugdunensis, and their capital Agedincum developed into the city of Sens, to which they gave their name.

A part of the people migrated to the Italian peninsula, settling on the Adriatic coast between Ariminum (modern-day Rimini) and Ancona, displacing the Umbrians. According to later Roman accounts, the Senones of Cisalpine Gaul led the Gallic war-band which defeated the Romans at the Battle of the Allia and sacked Rome around 390 BC, and were finally subjugated by Rome in 283 BC.