Citation Hunt

The Wikipedia snippet below is not backed by a reliable source. Can you find one?

Click I got this! to go to Wikipedia and fix the snippet, or Next! to see another one. Good luck!

In page Brittonic languages:

"

The displacement of the languages of Brittonic descent was probably complete in all of Britain except Cornwall, Wales, and the English counties bordering these areas such as Devon, by the 11th century. Western Herefordshire continued to speak Welsh until the late nineteenth century, and isolated pockets of Shropshire speak Welsh today.[citation needed]