According to Geoffrey of Monmouth, it was founded by King Bladud in the tenth century BC. Circa 60, the city got the Latin name Aquae Sulis ('the waters of Sulis'), when the Romans built a temple and baths in the valley of the River Avon.
In about 500 AD the Battle of Mons Badonicus may have been situated at Bath where the city was besieged, and King Arthur arrived in time to save the city and defeated the Anglo-Saxons, by killing their leaders Colgrim (Colgrin) and Baldulph (Baldulf). Later, Urbgennius served as the Earl of Bath.
In 577 the city fell to the West Saxons after the Battle of Deorham. It is said Saint David founded a monastery here, but it is more probably by Osric, King of the Hwicce in 675.
Geoffrey's use of Bath as the scene of this decisive battle indicates that he believed Bath to be the location of Badon, the Romans called the city Caer-Badon.
Caer | Notes | The Legend of King Arthur