Battle of Deorham

The Chronicle depicts the battle as a major victory for Wessex's forces, led by Ceawlin and one Cuthwine, resulting in the capture of the Romano-British towns of Glevum (Gloucester), Corinium Dobunnorum (Cirencester), and Aquae Sulis (Bath).

The identification of the other cities is even less controversial; they correspond to Corinium, a provincial capital in the Roman period (Cirencester); Glevum, a former colonia (Gloucester); and Aquae Sulis, a renowned spa and pagan religious centre (Bath).

[1]: 2 Guest's conception of the reality of the battle and its place in a coherent narrative of Anglo-Saxon military conquest and settlement of southern Britain remained prominent among historians into the 1980s, partly on the basis of the natural strategic importance of the Severn Valley in British geography.

Their routed forces were driven north of the River Severn and south of Bath where it appears they began the construction of the defensive earthwork called the Wansdyke in a doomed attempt to prevent more territory from being lost.

Burne speculated that if the Saxon attack drove the Britons back from their first line onto the second ridge near the edge of the escarpment, the slightest further retreat would leave their flanks open to a downhill pursuit.

[1]: 33–34 Scholars also argued that the importance given the towns more likely reflects ninth and tenth-century polities, of the time the Chronicle was given its present form, than the de-urbanised sixth century.

Sixth- and seventh-century battles of West-Saxon kings according to the Anglo-Saxon Chronicle