The early history of Romano-Celtic relations begins during a period of Gallic expansionism on the Italian peninsula, with the capture of Rome by Gauls in 390 BC (or more likely 387) and the suspiciously fortuitous rescue of the city by Camillus after the Romans had already surrendered. The Gauls who fought at the Battle of the Allia and captured Rome are most often identified as Senones. Over the next hundred years, the Gauls appear in classical sources as allies of the Etruscans and Samnites, but sometimes as invaders. Battles occur on Roman territory and on that held by Etruscans; by Italic peoples who later become Roman allies ("socii") willingly or under compulsion; and by the Gauls themselves. The defeat of the Senonian stronghold Sena (or "Senigallia") in 283 leads to nearly fifty years of mostly peaceful relations between Romans and Celts.