Dunster Castle evidence of a fortification at Dunster was an Anglo-Saxon "burgh". This was built on the summit of the hill and was possibly intended to protect the region against sea-borne raiders; by the mid-11th century it was controlled by a local nobleman called Aelfric. In 1066 the Normans invaded south-east England, defeating the English forces at the battle of Hastings: in the aftermath of the victory, William the Conqueror entrusted the conquest of the south-west of England to his half-brother Robert of Mortain. Expecting stiff resistance, Robert marched west into Somerset, supported by forces under Walter of Douai, who entered from
Gallox Bridge, Dunster gallows. The narrow bridge is approach via a raised causeway for pedestrians, while wheeled traffic uses the adjacent ford. The bridge crosses the River Avill which rises on the eastern slopes of Dunkery Beacon and flows north through Timberscombe and Dunster flowing into the Bristol Channel at Dunster Beach. It is likely that there was a previous bridge on the same site as in the 14th century it was known as Doddebrigge. The bridge may have been at the limit of the tidal mouth of the river during the medieval period. Dunster Beach, which includes the mouth of the River