On 13 November 1002, the feast of St Brice, King Æthelred of England ordered "all the Danes" in his kingdom to be slain – or so the Anglo-Saxon Chronicle reports. The sentence is short, but its afterlife is long: Norman chroniclers turned it into a slaughter of women and children, later writers added a murdered royal sister, and since 2008 and 2009 two mass graves, in Oxford and near Weymouth, have been suspected of holding victims of that day. This article separates what contemporary sources state, what later tradition added and what archaeology can genuinely show. More than once, the honest answer is: this cannot be proven.
Few events of the late Viking Age in England are as famous and as thinly documented as the St Brice's Day massacre. The name comes from the calendar: 13 November is the feast of St Brice (Brictius) of Tours. On that day in 1002, Danes living in England are said to have been killed on the orders of King Æthelred II.
How many died, where it happened and who exactly was targeted – the contemporary sources do not say. Only two texts survive from Æthelred's own lifetime: a brief entry in the Anglo-Saxon Chronicle and a royal charter of 1004 that describes a single location, Oxford. Everything else is later tradition. On top of that come two archaeological sites whose link to the massacre is disputed. This article deals with the subject soberly: the focus is on evidence and interpretation, not on retelling violence.
Æthelred II ruled England from 978 to 1016, with an interruption in 1013–14. His nickname "the Unready" comes from Old English unræd, "bad counsel" or "no counsel", a pun on his name Æthel-ræd, "noble counsel".
From the 980s onwards, Scandinavian fleets again attacked the English coast. In 991 an English force was defeated at Maldon in Essex, after which the crown paid large sums for the first time to make the raiders leave. These payments, later called Danegeld, recurred throughout the following years; see the article on Danegeld and the Battle of Maldon. In 994 Olaf Tryggvason and Sweyn Forkbeard attacked London together.
Some warriors stayed in England – in the king's service. They received pay and land and in return were to defend the realm against other Viking fleets. Their loyalty depended on payment, as became clear in 1001: a Dane named Pallig, whom Æthelred had, according to the Chronicle, richly rewarded with estates, gold and silver, went over with his ships to a Viking fleet that was ravaging Devon.
In 1002 the king again paid tribute, 24,000 pounds according to the Chronicle, to a fleet in the country. In the same year he married Emma, sister of Duke Richard II of Normandy. The marriage had a political purpose too: Norman harbours had sheltered Scandinavian fleets.
The Anglo-Saxon Chronicle is not a single work but a group of related annals in Old English, continued at different monasteries. For Æthelred's reign, versions C, D and E draw on a common account. Simon Keynes and others argue that this section was written in retrospect after the end of Æthelred's reign, in full knowledge of the later defeat by the Danes. That explains its bitter tone.
The entry for 1002 mentions the tribute, Emma's arrival and the death of an archbishop. Then comes the sentence at the heart of this article. In James Ingram's public-domain translation of 1823 it reads:
"And in the same year the king gave an order to slay all the Danes that were in England. This was accordingly done on the mass-day of St. Brice; because it was told the king, that they would beshrew him of his life, and afterwards all his council, and then have his kingdom without any resistance."Anglo-Saxon Chronicle, year 1002, translated by James Ingram (1823)
Three points stand out. First, the Chronicle justifies the order with a conspiracy against the king. Whether it existed cannot be tested. Second, it names no place, no number and no group of victims. Third, the Old English original reads "ealle þa Deniscan men", literally "all the Danish men". Ingram's "all the Danes" is slightly broader than the wording. The Chronicle says nothing about women and children, and it does not explicitly link the order to Sweyn Forkbeard or mention a murdered sister of the Danish king. Both appear only in later texts.
The second contemporary witness is a diploma that Æthelred issued on 7 December 1004 at Headington near Oxford. In Peter Sawyer's catalogue of Anglo-Saxon charters it is number S 909. In it the king confirms land and privileges to St Frideswide's minster in Oxford and explains why the church had to be rebuilt. The charter survives only in later copies, but most specialists, among them Frank Stenton, Dorothy Whitelock and Simon Keynes, regard it as authentic.
According to the charter, a decree had been issued with the counsel of the leading men that all the Danes who had sprung up in this island "like darnel among the wheat" should be killed. Darnel, Latin lolium, is a weed of grain fields; the image comes from the parable of the tares in the Gospel of Matthew. The Danes of Oxford, trying to escape death, had forced their way into the sanctuary, breaking doors and bolts. When their pursuers could not drive them out, they set fire to the woodwork, and the church burned together with its muniments and books.
The text is valuable for two reasons. First, it is the only contemporary source that names a specific place. Second, it shows that two years later the court presented the event without regret. The Latin phrase iustissima examinatione is rendered in Whitelock's standard translation as "by a most just extermination"; literally, examinatio means something closer to "examination" or "judgement". Either way, the killing appears as a justified measure, and the perpetrators, according to the text, were the townspeople of Oxford, not a royal army.
Around 1000, Oxford lay on the border with the areas of dense Scandinavian settlement. The historian Ryan Lavelle suggests that such frontier towns, and places with small Danish communities, were the ones most affected.
The further the texts are from the event, the more detailed they become – a warning sign.
William of Jumièges, a Norman monk, wrote the "Deeds of the Norman Dukes" (Gesta Normannorum Ducum) around 1070. He presents the massacre as a crime against peaceful Danes in which women and children were killed as well. Young Danes who escaped, he says, fled to Sweyn and persuaded him to take revenge. He wrote shortly after 1066 for the Norman court. His graphic details appear in no earlier source.
John of Worcester, in the early twelfth century, adds that Danes "of both sexes" were targeted – again without visible basis.
Henry of Huntingdon wrote his "History of the English" (Historia Anglorum) around 1130. He claims that Æthelred sent secret letters to every town so that the Danes would be killed everywhere at the same hour, and he blames the king's arrogance after his Norman marriage. As a child, he says, he heard very old people speak of it. A coordinated action on a fixed day fits the Chronicle's date; the character judgement is a twelfth-century moral reading.
The best-known embellishment is the story of Gunnhild. William of Malmesbury, a monk and one of the most important historians of the twelfth century, reports in his "Deeds of the English Kings" (Gesta regum Anglorum, c. 1125) that among the victims was Gunnhild, a sister of Sweyn and daughter of Harald Bluetooth. She had lived in England as a hostage, was a Christian and was married to Pallig. According to William she was killed at the instigation of Eadric Streona. Before her death she is said to have foretold that her blood would cost England dearly.
The story provides a personal motive for Sweyn's later attacks, and Frank Stenton still regarded it as a well-recorded tradition. Recent scholarship is sceptical. Ann Williams stresses that William is the only source and that his account points to a later date: Eadric Streona only became ealdorman of Mercia in 1007. Scandinavian sources know of no sister of Sweyn called Gunnhild who was killed in England.
In addition, the Chronicle says Pallig had already defected to the raiders in 1001. The Gunnhild story therefore belongs in the category of legend: a true core is possible, but it is not attested. More on Sweyn and his family in the article on Sweyn Forkbeard.
The wording "all the Danish men who were in England" sounds absolute. Yet almost all modern historians read it narrowly. Since the late ninth century, many families of Scandinavian descent had lived in the north and east of England. This region, the Danelaw, had been part of the English kingdom for four or five generations by 1000. More in the article on the Danelaw.
An order against all these people would have been impossible to carry out, and it does not fit the sources. No killings or unrest are recorded in the Danelaw in 1002; the region remained loyal to Æthelred until 1013, and moneyers with Scandinavian names went on striking coins. A few years later the king granted land near Oxford to a man named Toti. Ann Williams has therefore emphasised that the decree was not aimed at the English of Scandinavian descent in the eastern shires.
The likely targets instead were Danes who had arrived recently: remnants of the Viking armies of the 990s, mercenaries in royal service who were considered unreliable after Pallig's desertion, traders and smaller groups in towns in the south and on the Danelaw border. Ian Howard estimates the number of dead at a few hundred at most. Every estimate extrapolates from a single attested place.
Simon Keynes sees the order mainly as a reaction to mercenaries who had turned on their employers. Levi Roach, in his 2016 biography of Æthelred, stresses the religious language of the court, as in the charter's image of weeds, and notes that such purges bred suspicion and weakened the realm.
In 2008 the excavation firm Thames Valley Archaeological Services investigated a building site in the grounds of St John's College, Oxford. Under the direction of Sean Wallis, the archaeologists came upon the ditch of a previously unknown Neolithic henge, a circular earthwork some four thousand years older than the dead. In the fill of this ditch lay the remains of 35 to 37 people; figures vary with the method of counting, and 37 is the number most often given.
The anthropological study produced a consistent picture. Where sex could be determined, they were men, most aged between 16 and 25, strongly built and taller than average for their time. Many skeletons show injuries sustained shortly before death: skull fractures, stab wounds especially in the back and pelvis, and on some, blows to the neck. Defensive wounds are largely absent. Some bones bear traces of burning. Healed older injuries suggest combat experience.
Radiocarbon dates on the bones gave a range of roughly 960 to 1020. The year 1002 falls right in the middle. With the burning and the charter's church fire, the Danes of St Frideswide's seemed an obvious match.
In 2012 a team led by the archaeological scientist Mark Pollard published isotope analyses in the Oxford Journal of Archaeology. Carbon and nitrogen values in the bone showed considerably more marine food than in the local population. Strontium values in tooth enamel, which indicate where a person lived as a child, resembled those of the men from Ridgeway Hill. Pollard concluded that these were more likely warriors who had not lived long in England, perhaps a captured Viking band. At the same time he stressed that the injuries and burning fit the account of 1002.
Sean Wallis, the excavator, considers an interpretation as massacre victims entirely compatible with the evidence: men of fighting age, some with a warrior past, taken by surprise and pursued. The readings are not mutually exclusive: Scandinavian mercenaries in Æthelred's service are precisely the group most likely targeted by the order.
In 2020 a large genetic study of Viking Age people (Margaryan, Willerslev and others) found that one of the Oxford men was closely related to a man buried on the Danish island of Funen: a half-brother, or an uncle or nephew. This supports the Scandinavian origin of that man; it says nothing about the day he died. More in the article on Viking DNA and its limits.
The second site is often mentioned in the same breath but probably belongs to a different context. In June 2009, during construction of the A354 Weymouth Relief Road, Oxford Archaeology uncovered a pit in a disused Roman quarry on Ridgeway Hill. It contained 54 bodies and 51 skulls, all male. The heads had been placed separately from the bodies on one side of the pit.
At first the dead were thought to be victims of the Roman conquest, but radiocarbon dates moved them into the late Viking Age. The basis is the 2014 excavation monograph "Given to the Ground" by Louise Loe, Angela Boyle, Helen Webb, David Score and other authors; the literature usually gives a range of about 970 to 1025, while earlier reports gave wider ranges. Isotope analyses of the teeth of ten men pointed to origins in colder regions outside Britain, probably mostly Scandinavia. Most were between their late teens and mid-twenties.
The injuries indicate an execution, not a battle. The heads were removed with sharp blades, often with several blows, which suggests inexperienced executioners. The men were probably prisoners. Its location on a main road and parish boundary matches known Anglo-Saxon execution sites. That three skulls are missing has prompted speculation about heads put on display – an interpretation, not a finding.
Some fifty men correspond roughly to the crew of a larger ship. The monograph considers the execution of a captured Viking band by the English very likely and names possible occasions such as the ravaging of Portland in 982 or attacks on Dorset in 998, 1015 and 1016. St Brice's Day is one of several possibilities, not the most likely. Britt Baillie has also pointed to the code of honour the sagas attribute to the Jomsvikings – an idea that is hard to test.
For this period, radiocarbon dating yields a range of several decades, never a day or a year. The ranges of 960 to 1020 for Oxford and about 970 to 1025 for Ridgeway Hill cover a time when England saw fighting with Scandinavian forces almost every year.
Isotope values show where a person grew up and what they ate, not whether they came as a mercenary, trader or raider. Levi Roach therefore notes that the Oxford dead cannot be conclusively linked to St Brice's Day. For Oxford the connection is possible and seriously argued; for Ridgeway Hill it is much weaker. No secure archaeological witness to 13 November 1002 has yet been found.
In 1003 Sweyn Forkbeard came to England with an army. The Chronicle records the destruction of Exeter and raids in Wiltshire; Norwich and Thetford followed in 1004. The Chronicle does not say that Sweyn came for revenge; that link is first made by William of Jumièges and William of Malmesbury. A ruler who had already attacked England in 994 needed no special motive, though the killings may have offered a welcome pretext.
In 1009 a great army landed under Thorkell the Tall, and in 1012 Danish warriors killed Archbishop Ælfheah of Canterbury. Afterwards Thorkell entered Æthelred's service – another example of how blurred the line between enemy and mercenary was. In 1013 the Danelaw submitted to Sweyn first, then Wessex and London. Æthelred fled to Normandy; Sweyn died in February 1014.
Æthelred returned and died in April 1016. In the same year Sweyn's son Cnut prevailed against Edmund Ironside, and in 1017 he married Æthelred's widow Emma; more on this in the articles on Cnut the Great and the Vikings in England. Frank Stenton saw the massacre as a political act that helped provoke Sweyn's campaigns, and Edward Freeman called it "not only a crime but a blunder". Others consider its influence limited, since the attacks were already in full swing.
Norman writers used the massacre as an argument: a king who had the defenceless killed had brought God's anger on his people. In Coventry, a play about a fight between English and Danes was performed at Hocktide, a spring festival after Easter, and revived for Elizabeth I at Kenilworth in 1575; it was said to commemorate the killing of the Danes. The date does not match November, and the origin of Hocktide is unknown.
Modern scholars such as Levi Roach and Simon Keynes judge Æthelred with more nuance than earlier generations. The massacre appears as a targeted act of violence against a group deemed dangerous – not a genocide of everyone of Danish descent, but no harmless police action either: the Oxford charter shows that people who sought refuge in a church were killed, and that the king called this just two years later.
When exactly was the St Brice's Day massacre? On 13 November 1002, according to the Anglo-Saxon Chronicle. Whether all killings happened on that one day is uncertain; Henry of Huntingdon, around 1130, claims a simultaneous action in all towns.
How many people died? Nobody knows. No source gives a figure. Only Oxford is securely attested. Estimates such as Ian Howard's assume a few hundred dead at most; any number remains a guess.
Were the inhabitants of the Danelaw affected? As far as we know, no. There are no reports of killings from the Danelaw, and the region stayed loyal to Æthelred until 1013. The targets were probably newly arrived Danes, above all mercenaries and warriors.
Are the Oxford skeletons victims of the massacre? Possibly. Dating, origin and burning fit the charter of 1004. Isotope analyses, however, point to warriors who had not been in England long, so an execution of captured Vikings is also argued. The attribution cannot be proven.
Did Gunnhild, Sweyn Forkbeard's sister, really exist? This cannot be clearly established. The story comes from William of Malmesbury in the twelfth century. Older English and Scandinavian sources do not know her, so she is mostly considered legendary.
Sweyn Forkbeard · Cnut the Great · Danegeld & the Battle of Maldon · The Danelaw · The Vikings in England – from Lindisfarne to 1066.
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