Breton people
The Breton people migrated to this area from south-west Britain in the 4th to 6th centuries, bringing their language and culture. Breton, a Brythonic language, bears great similarities to the Cornish and to Welsh languages of southwest England and Wales. Many of the traditional stories and myths also share a Breton-Cornish heritage. In the early 21st century, there are few, if any, native speakers of Breton who are not fully bilingual in French, although there were still several hundreds of thousands at the beginning of the 20th century.