The earliest fortification of Taunton started for King Ine of Wessex and Æthelburg, in or about the year 710 AD. However, according to the Anglo-Saxon Chronicle this was destroyed 12 years later. Somerset, like Dorset to the south, held the West Saxon advance from Wiltshire/Hampshire back for over a century, remaining a frontier between the Saxons and the Romano-British Celts. The Saxons conquered Bath following the Battle of Deorham in 577, and the border was probably established along the line of the Wansdyke to the north of the Mendip Hills. Then Cenwalh of Wessex broke through at Bradford-on-Avon in 652, and the Battle of Peonnum possibly at Penselwood in 658, advancing west through the Polden Hills to the River Parrett.