Tumulus culture
It is then proved the existence of a pre-Gallic celticity in the North-Western Italy, preceding the 4th century BC, whose origin must be sought long before the 600s BC, date of the invasion of Bellovesus, that is, at least at the time of Canegrate culture (13th century BC), which presents in the pottery and bronze artifacts many points in common with the most western groups of the Urnfield culture (Rhine-Switzerland-eastern France, 13th - 8th centuries BC). Or perhaps, a more likely hypothesis, is that a more ancient proto-Celtic presence can be traced back to the beginning of the Middle Bronze Age (16th-15th century BC), when North Western Italy appears closely linked regarding the production of bronze artifacts, including ornaments, to the western groups of the Tumulus culture.