450 – Celts expanded into Spain. Anglo-Saxon invasion.
225 – Battle of Telemon; Celts advance on Rome again. Roman army routs invading Celtic Gauls at Telamon in central Italy, all Celtic tribes south of River Po destroyed. From the major Celtic loss at the Battle of Telamon, Celtic lands come under pressure from the Germanic tribes to the north, and the spread of Rome. Gallia Cisalpina and southern Gaul are conquered; the Iberian Peninsula falls by degrees.