The Senones or Senonii (Gaulish: "the ancient ones") were an ancient Gallic tribe dwelling in the Seine basin, around present-day Sens, during the Iron Age and the Roman period.
Part of the Senones settled in the Italian peninsula, where they ousted the Umbrians between Ariminum (modern-day Rimini) and Ancona. They are described in classical sources[citation needed] as the leaders of the Gallic war-band that captured Rome during the Battle of the Allia in 390 BC. They remained a constant threat until Rome eventually subjugated them in 283 BC, after which they disappeared from history.[1]