The Battle of Hereford was fought at Hereford

Hereford

Hereford is a cathedral city, civil parish and county town of Herefordshire, England. It lies on the River Wye, approximately east of the border with Wales, southwest of Worcester, and northwest of Gloucester...

, England

England in the Middle Ages

England in the Middle Ages concerns the history of England during the Medieval period — from the end of Roman rule in Britain through to the Early Modern period...

 in 760

760

Year 760 was a leap year starting on Tuesday of the Julian calendar. The denomination 760 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.- China :* Emperor Xuanzong is placed under house arrest...

. The conflict followed decades of hostility between the Welsh

Britons (historical)

The Britons were the Celtic people culturally dominating Great Britain from the Iron Age through the Early Middle Ages. They spoke the Insular Celtic language known as British or Brythonic...

 Kingdoms of Brycheiniog

Brycheiniog

Brycheiniog was a small independent petty kingdom in South Wales in the Early Middle Ages. It often acted as a buffer state between England to the east and the powerful south Welsh kingdom of Deheubarth to the west. It was conquered and pacified by the Normans between 1088 and 1095, though it...

, Gwent and Powys

Powys

Powys is a local-government county and preserved county in Wales.-Geography:Powys covers the historic counties of Montgomeryshire and Radnorshire, most of Brecknockshire , and a small part of Denbighshire — an area of 5,179 km², making it the largest county in Wales by land area.It is...

 by Æthelbald of Mercia and Coenred of Wessex, and involved the armies of Mercia

Mercia

Mercia was one of the kingdoms of the Anglo-Saxon Heptarchy. It was centred on the valley of the River Trent and its tributaries in the region now known as the English Midlands...

 and the Welsh. The Welsh defeated the Mercian army, and freed themselves from the influence of the English.

Which Welsh kingdom led the offensive is uncertain. Both King Now I Hen (Hen the Old) of Brycheiniog and Eliseg of Powys

Elisedd ap Gwylog

Elisedd ap Gwylog , also known as Elise, was king of Powys in eastern Wales.Little has been preserved in the historical records about Elisedd, who was a descendant of Brochwel Ysgithrog. He appears to have reclaimed the territory of Powys after it had been overrun by the English...

 have been put forward as candidates. Dyfnwal ap Tewdwr

Dumnagual I of Alt Clut

Dumnagual I, also known as Dumnagual Hen , was a ruler of the Brythonic kingdom of Alt Clut , later known as Strathclyde, probably sometime in the early 6th century. His biography is vague, but he was regarded as an important ancestor figure for several kingly lines in the Hen Ogledd or "Old North"...

was killed in the battle