The Celts had hundreds of deities, some of which were unknown outside a single family or tribe, while others were popular enough to have a following that crossed lingual and cultural barriers. The former says that the Gauls were to the north of the Celts, but that the Romans referred to both as Gauls in linguistic terms the Gauls were certainly Celts. Thames and Hudson, The Canegrate culture represented the first migratory wave of the proto-Celtic   population from the northwest part of the Alps that, through the Alpine passes , had already penetrated and settled in the western Po valley between Lake Maggiore and Lake Como Scamozzina culture. Retrieved 8 April Pre-Roman peoples established into Portugal. This view has been challenged by the hypothesis that the Celtic languages of the British Isles form a phylogenetic Insular Celtic dialect group.