What happened to the British Celts? King Arthur.
What happened was that was formed a battle, which is named the Battle of Badon. The Battle of Bason was a battle thought to have occurred between Celtic Britons and Anglo-Saxons in the late 5th century. It was credited as a major victory for the Britons, stopping the enchorament of the Anglo-Saxon kingdoms for a period. It is chiefly known today fot he supposed involment of King Arhur, a tradition that first clearly appeared in the 9th-century Historia Brittonum. Because of the limited number of sources, there is no certainly about the date, location, or details of the fighting.