There are 300 fluent speakers of Cornish--the Celtic dialogue of Cornwall--left, and they're working hard to ensure the language doesn't die. So says Henry Chu of the Los Angeles Times on July 25, 2009. He quotes a native speaker relaying a folktale:
"Y'n termyn eus passys, 'th era tregas yn Selevan den ha benyn yn tyller cries Chi an Hordh. . . . "
Which sounds a lot like "In termenus passeus thur trigus 'n sleven..." You can hear it on the
Times site--just go to the insert.
The Cornish language was saved from near-death in the early 20th century, when scholar Henry Jenner gave a speech before the Celtic Congress, which was dedicated to preserving Celtic Culture. They had not accepted Cornish as a Celtic language, but all assembled spoke either Welsh, Irish, or Breton--all indisputably Celtic tongues. Jenner gave the speech in Cornish, and everyone understood. Ta-da!
Since Cornwall is in the utter south of England, and just north of ancient Gaul (France), it makes sense that their language, like Irish and the others, would share common words--enough to be mutually comprehensible.
Scholars like Simon James and Peter Berresford Ellis are in agreement on this much, at least: that Celtic was an Indo-European language (as were Latin and Greek and Sanskrit) that broke into several separate languages. The "Gaulish" tongue is largely lost--we know only a few hundred words. The language of Celtic Iberia is likewise a mystery. But several places managed to hold onto their language, like Ireland, Scotland, Wales, and yes--Cornwall.
Parts of Brittany also hold onto a Celtic language: Breton. The history of that tongue is unique. Although Brittany was considered part of ancient Gaul around 2,000 years ago, the Roman conquest and subsequent Romanization of the area did it damage--how much is up for debate. Many folks fled to southern England when the Romans moved in, and took their language with them.
Five hundred years later, migration moved in the other direction. Invading Anglo Saxons drove a lot of folks from Cornwall back to Brittany, with their version of Celtic-speak. The Breton language to day is derived from that--from Cornish--and not from ancient Gaulish.