Which language group includes Irish, Welsh and Breton?

The Celtic languages are a language family inside of Indo-European languages. There are six Celtic languages still spoken in the world today, spoken in north-west Europe. They are divided into two groups, Goidelic (or Gaelic) and the Brythonic (or British).

The three Goidelic languages still spoken are Irish, Scottish, and Manx. Scottish is the main language spoken in parts of north-west Scotland and Irish is the main language spoken in the Gaeltacht in Ireland. Manx is spoken mainly by people interested in the language.

The three Brythonic languages are Welsh, Cornish, and Breton. Of these Cornish became extinct in the 18th century but people have started speaking it again now. Welsh is spoken everywhere throughout Wales, but is mainly first language for people in the western part of Wales, in the area some people call the Bro Gymraeg. Breton is spoken mainly in west Brittany, and is the only Celtic language not mainly spoken in the British Isles. Because Brittany is part of France, the language is in danger of becoming extinct, just like Cornish, and there are ongoing efforts to prevent this from happening.