Anglo-Saxon Chronicle. 628. This year Cynegils and Cwichelm fought with Penda at Cirencester, Gloucestershire [Map], and afterwards entered into a treaty there.

The Hwicce was a kingdom in Anglo-Saxon England established in 577 after the Battle of Dyrham. In 628 Hwicce became a sub-kingdom of Mercia after the Battle of Cirencester. Hwicce included most of Worcestershire and Gloucestershire, and the south-west part of Warwickshire.