England–Wales border point. In 926, Edward's successor Athelstan, "King of the English", summoned the Welsh kings including Hywel Dda of Deheubarth to a meeting at Hereford, and according to William of Malmesbury laid down the boundary between England and Wales, particularly the disputed southern stretch where he specified that the eastern bank of the Wye should form the boundary. By the mid-eleventh century, most of Wales had become united under the king of Gwynedd, Gruffudd ap Llywelyn. In 1055, he marched on Hereford and sacked the city. He also seized Morgannwg and the Kingdom of Gwent, together with substantial territories east of
River Dore the local geology combined with low rainfall. River Dore The River Dore (Welsh: "Afon Aur" lit: 'the River of Gold') is a tributary of the River Monnow in Herefordshire, England. It rises on Cusop Hill, in the foothills of the Black Mountains, close to the border between England and Wales. It flows for through the villages of Dorstone, Peterchurch, Vowchurch, Abbey Dore and Pontrilas, before reaching the Monnow near Llangua. The Monnow itself is a tributary which flows into the River Wye at Monmouth. The name Dore probably derives from the Welsh word "dŵr", meaning "water". The word was later