From the 4th century AD, many Britons left to cross the English Channel from Wales, Cornwall and southern Britain, and started to settle the western part of Gaul (Armorica), where they started a new nation: Brittany. The Britons gave their new country its name and the Breton language, Brezhoneg, a sister language to Welsh and Cornish. The name "Brittany" (from "Little Britain") arose at this time to tell the new Britain apart from "Great Britain". Brezhoneg is still spoken in Brittany today.