 About 400 B.C.a branch of the Senones made their way over the Alps and, having driven out the Umbrians, settled on the east coast of Italy from Ariminum to Ancona, in the so-called Ager Gallicus, and founded the town of Sena Gallica (current Senigallia), which became their capital.In 391 they invaded Etruria and besieged Clusium.