Watlington Hoard

Found by a metal detectorist in 2015 near Watlington, this late ninth-century Viking hoard rewrote what historians knew about the relationship between Alfred the Great and his Mercian ally.

History & Significance

On an October afternoon in 2015, metal detectorist James Mather was searching a ploughed field on farmland near the Chiltern town of Watlington in south Oxfordshire when his machine signalled a strong return. Beneath a few centimetres of topsoil he found a small hoard of Viking silver: 186 objects in total, including silver coins, arm rings, ingots, and pieces of cut hacksilver. Within days, archaeologists from the Portable Antiquities Scheme and the Ashmolean Museum were excavating the find spot.

The objects themselves were immediately significant. The coins — 186 in total, predominantly silver pennies — dated to the late 870s AD, a period of intense Viking pressure on the Anglo-Saxon kingdoms. But what made the Watlington Hoard internationally important was a detail on the coinage: the hoard contained coins of both Alfred, King of Wessex, and Ceolwulf II, King of Mercia. On some coins, the two kings appeared together in a "two emperors" design borrowed from late Roman coinage. This was unprecedented.

Ceolwulf II had been dismissed by the ninth-century chronicler Asser — writing as Alfred's biographer — as a "foolish king's thane" installed by the Vikings as a puppet ruler. Historians had largely accepted this verdict for over a century. The Watlington coins tell a different story: that Alfred and Ceolwulf were partners, allies who jointly struck coins and perhaps jointly organised resistance to the Great Heathen Army. The hoard is now at the Ashmolean Museum in Oxford.

James Mather reported his discovery to the local Finds Liaison Officer the same day. He was an experienced detectorist and understood both the legal requirements of the Treasure Act 1996 and the importance of professional excavation for any find of this significance. The subsequent dig recovered 186 objects from a discrete deposit, all apparently buried together at a single moment in time.

The majority of the objects are silver coins: 186 pennies spanning the reigns of Alfred of Wessex and Ceolwulf II of Mercia, with some earlier coins of Æthelred of Wessex also present. The non-coin items include complete silver arm rings of Scandinavian type, fragments of arm rings, silver ingots, and pieces of hacksilver — bullion cut from larger objects and weighed as a medium of exchange. This mixture of coin and bullion is characteristic of Viking silver hoards from the period: Scandinavian traders and warriors operated in an economy that valued silver by weight, not by face value, and cut up jewellery and vessels without hesitation.

The burial date can be estimated quite precisely from the latest coins in the hoard. The most recent issues represented are from the late 870s, consistent with deposit around 878–879 AD — the period immediately before or after Alfred's decisive victory over Guthrum's Viking army at the Battle of Edington (May 878). Whether the hoard was buried by a Viking raider, a nervous local, or a Norse trader passing through is unknown. No one returned to retrieve it.

The historical significance of the Watlington coins lies in what they tell us about Ceolwulf II of Mercia, who ruled from 874 to 879. The standard account, drawn almost entirely from Asser's Life of Alfred, portrayed Ceolwulf as a Viking stooge: installed by Guthrum's army after they drove out the legitimate Mercian king Burgred, and obliged to hold his kingdom "to serve the Viking army whenever they needed it." This portrait made Ceolwulf a figure of shame and marginality in the story of Anglo-Saxon England's survival.

The Watlington coins challenge this directly. The joint "two emperors" pennies show Alfred and Ceolwulf in near-identical regal portraits, with a shared reverse design that had not been used in England since the reign of Offa of Mercia in the eighth century. These were not coins struck separately by two independent kings; they were jointly produced, suggesting coordination of mints, ideology, and perhaps military strategy. The symbolism of Roman imperial power, deployed jointly, implies that Alfred and Ceolwulf saw themselves as equal partners in a shared project.

Gareth Williams of the British Museum, who studied the hoard intensively, suggested that Asser's dismissive account was deliberate propaganda: after Ceolwulf's death and Mercia's eventual absorption into Alfred's expanded kingdom, it was convenient for Alfred's biographer to retroactively delegitimise his former ally. The Watlington Hoard gives Ceolwulf II back his kingdom.

The Treasure Act 1996 required the hoard to be offered for sale to a public institution at a price set by the Treasure Valuation Committee. The Ashmolean Museum in Oxford led a fundraising campaign and acquired the hoard in 2017 for £1.35 million, with significant contributions from the Art Fund, the Heritage Lottery Fund, and public donations. The acquisition kept the hoard in Oxfordshire — the county where it was found — and close to the Bodleian Library and Oxford's extensive collections of early medieval manuscripts.

The Ashmolean displays the hoard as part of its Anglo-Saxon collections. The display contextualises the coins within the broader political history of ninth-century England, with maps showing the Viking campaigns and explanatory material on Ceolwulf II's revised historical standing. The "two emperors" coins are particularly striking: small, worn, clearly used in everyday commerce, yet carrying an imperial image that speaks to the ambitions of the kings who struck them.

James Mather, the detectorist who found the hoard, received his share of the treasure reward. He has spoken publicly about the find in interviews and at detecting events, and his account of that October afternoon — the signal, the careful exposure of the first coin, the moment he realised what he was looking at — has become a well-known story in the metal-detecting community.

The farmland near Watlington where the hoard was found sits at the foot of the Chiltern escarpment, where the chalk hills meet the clay vale of south Oxfordshire. It is productive arable land, farmed continuously since at least the early medieval period. The proximity to the ancient Icknield Way — a prehistoric ridgeway running along the Chiltern scarp — is significant: this was a major route through England for thousands of years, and ninth-century traffic along the Way would have included traders, armies, and refugees.

Watlington itself is a small market town with a medieval street pattern, a seventeenth-century town hall, and a church of medieval origin. The Chiltern Area of Outstanding Natural Beauty extends to the east and north. The Iron Age hillfort of Shirburn Castle stands on the scarp nearby. The find site is on private farmland and is not publicly accessible, but the landscape can be appreciated from the public footpath network across the Chilterns.

For metal detectorists, the Watlington find is a reminder of what remains in the ground across the English countryside. Portable Antiquities Scheme data for Oxfordshire records thousands of finds from the broader area: Iron Age coins, Roman brooches, medieval pilgrim badges. The Watlington Hoard was exceptional, but it was found in a landscape rich with unrecorded history.

See the full research report for Watlington Hoard

Scheduled monuments, PAS archaeological finds, Domesday records, geology, Roman roads, historical literature — the same report Aubrey generates for paying customers, free to read.