There are five living Celtic languages in the region.
He supplemented his physiological work with a study of the Celtic languages.
This is because the Celtic languages are divided into two groups.
The name derives from the Celtic language, although it may have even earlier roots.
The word barc appears to have come from Celtic languages.
In 2010, there were more than 1.4 million speakers of Celtic languages.
Unlike the others, however, no Celtic language has been spoken there in modern times.
Each of the six nations has its own Celtic language.
Later, whether by invasion or cultural diffusion, the Celtic language was established.
The name probably derives from the Celtic language and means rocky stream.