Interesting facts about the Common Brittonic language

• The Ogham stones in southwestern Britain
• Place names like “Cardiff” (Caerdydd) and “York” (Eboracum)
• Glossaries compiled by early scholars to help preserve the language

4. The Decline of Common Brittonic

Despite its wide usage, Common Brittonic began to decline around the 8th century, largely due to the invasion of Anglo-Saxon settlers. The establishment of Old English in England gradually overshadowed Common Brittonic, confining its use primarily to western territories. By the Middle Ages, it had largely evolved into distinct regional languages.