Initial defence After being ejected from England, Cnut was at Denmark, where his brother
Harald ruled. Possibly taking advantage of the upheaval created in England, he launched his invasion and landed at Sandwich. From here, rather than heading northward, where he would face Edmund, Cnut travelled deeper into Wessex to sack Dorset, Somerset, and Wiltshire. Both Edmund and Cnut had influence with the midlands, and Edmund now directly controlled much of it, but Edmund's first few attempts to bring armies against Cnut were unsuccessful. The situation was confused; Æthelred lay bedridden at
Cosham and Edmund was formally in revolt. Still, Edmund raised an army from the Five Boroughs and joined with Eadric's own force by late September or early October. This force also disintegrated, allegedly due to betrayal on Eadric's part, who then quickly surrendered to Cnut. Eadric was followed by the West Saxons, who gave Cnut hostages and supplies. By the end of 1015, Æthelred's control over his kingdom was collapsing, while Edmund controlled the Danelaw and Eastern Mercia, and Cnut held central Wessex. In January of 1016, Cnut and Eadric advanced into
Hwicce and
Warwickshire where his men "ravaged and burnt, and killed all they came across" according to the
ASC C. In response, Edmund raised an army amongst the Mercians, however they demanded that King Æthelred join them alongside the Londoners. It has been suggested that this was due to Edmund's lack of distinction as king, however there are other examples of powerful noblemen raising armies in Anglo-Saxon England, even in the campaign of 1015–1016. The Mercians probably lacked confidence of victory without the London garrison, and were outnumbered by Cnut and Eadric. Æthelred sent out orders for another general summons which Edmund carried out, threatening penalties on those who did not comply. On the pleading of his son, Æthelred agreed to travel north from London, where he had fled after Wessex, with as many men he could muster, possibly meeting Edmund at
St Albans. However this force collapsed too as Æthelred fled due to perceived treachery. The
ASC C claims that "those who should support him" were the perpetrators. At this point Edmund travelled northwards where he met Uhtred, his brother-in-law, either at
Bamburgh or
York. Together, they attacked Staffordshire, Shrewsbury, and Cheshire, which had defected to Cnut. He may have intended to attack Eadric’s support base and may have consciously refused battle with Cnut. Cnut attacked the regions loyal to Edmund and headed to Northumbria along the
Great North Road. His lands threatened, Uhtred rushed north and surrendered to Cnut upon hearing of this, but was executed. Soon afterwards, Edmund returned to his weakening father at London, possibly with the additional intention of raising troops. Æthelred would die on 23 April 1016 with Edmund by his side, who quickly arranged his burial at
Old St Paul's Cathedral, London. Father and son had made peace.
First battles against Cnut The citizens and councillors in London chose Edmund as king and probably crowned him. The coronation would have been done by Lyfing of Canterbury, who held ties with Edmund since at least witnessing his lease at Holcombe. The majority of the English magnates, in a
Witan meeting at
Southampton, elected Cnut. In McDermott's view, factors working in Edmund's favor for the election included his presence at London, the destabilising effect of Streona's switching sides, and Cnut's campaign in the country. There was another claimant to the throne by Æthelred's death, Emma's son Edward, but his claim lacked support in England. In Pauline Stafford's view, there was "properly no English resistance" before the death of Æthelred. After his election, Edmund marched into Wessex and
John of Worcester claims that the West Saxons enthusiastically submitted to him. However the more likely option was that Edmund had to use force and faced some resistance, as the West Saxon aristocracy was sharply divided in supporting Edmund. Welsh support of Edmund is attested contemporaneously in
''Thietmar's Chronicle and the Liðsmannaflokkr''. Given Eadric Streona's prior raids into Wales, they were probably motivated by opposition to the ealdorman. Beyond this, Edmund probably also relied on "deep wells of loyalty" to the royal family in Wessex, and may plausibly have had access to Scandinavian mercenaries left over from Æthelred. With his new base, he began raising an army, possibly from the shires of Somerset, Wiltshire, and Dorset. After Edmund had left for Wessex, Cnut arrived at
Greenwich around the
Rogation days on 7–9 May and promptly besieged London. Unable to capture the city, Cnut campaigned into Wessex and faced Edmund at
Penselwood. Generations later, Anglo-Norman narratives give the victory to Edmund, and this is accepted by multiple modern historians. However,
Florence of Worcester claimed that Edmund was unable to raise enough troops in time, which James uses to suggest that Edmund would not have initiated fighting and that Cnut was victorious. Alternatively, the result of Penselwood may have been inconclusive or even embarrassing for Edmund, causing reticence in the ASC. By this argument, the Anglo-Normans declared Edmund the victor for ideological reasons. If the English were in fact defeated, then according to James, Edmund may have broken off from fighting and made his way towards
Bath, in
Somerset, while being pursued by Cnut. In any case, the subsequent
Battle of Sherston took place in the last week of June, and the Danish army was probably led by Cnut himself. According to the ASC C, "a great number on both sides fell there." Although Sherston was exhausting for both sides, Edmund, who is reputed to have fought bravely, seems to have won a marginal victory, maintaining the field. Sherston strengthened Edmund's position in Wessex, and Malmesbury claimed that the remaining West Saxons submitted to Edmund, which is supported by repeated mentions of him raising troops from the region. As a result, Sherston was a watershed moment, which gave Edmund the support base to maintain his resistance to Cnut.
Road to Assandun hill in
Essex, the more likely location of the
Battle of Assandun|alt=A hilltop Cnut returned to besiege London, and Edmund raised a third army from Wessex before travelling to the town's relief. As he marched, Edmund kept north of the Thames and launched a surprise attack from
Tottenham, causing the Danes to flee to their ships. Edmund stayed in London for two days before renewing the pursuit, crossing the Thames around Brentford and attacking Cnut, who had used the time to establish himself elsewhere, possibly at Brentford. Edmund defeated Cnut and the Danes were forced to flee, however many of Edmund's men drowned in the river Thames, and he returned to Wessex to raise troops. In the English king's absence, Cnut renewed the siege, and from the perspective of the Londoners this may have made Brentford a hollow victory. Cnut made little progress, and possibly around September, went on a plundering detour into Mercia. Cnut's army returned to Kent by the
River Medway, but Edmund quickly rallied another army and pursued the Danes to the
Isle of Sheppey, likely having routed them in battle at
Otford. However, he ceased his pursuit when Eadric Streona came over to him at
Aylesford. It is clear that by this point Edmund was increasingly gaining influence over a wide area, even beyond his support bases in the Five Boroughs and Wessex, and the war was turning in his favour. But his decision to allow Eadric back into his ranks was criticised heavily by the ASC, of which the C manuscript says that "no greater folly was ever agreed to." Afterwards, Edmund returned to Wessex for a short time. Possibly in retaliation to Eadric's betrayal, Cnut's army raided into
Essex and then Mercia. According to the ASC C, Edmund raised an army from "the whole English nation," which likely refers to a wide base of support more than a nation in arms, and pursued the Danes as they returned into Essex, whereupon he overtook Cnut. The East Anglians, led by
Ulfcytel, took up a significant portion of Edmund's army alongside his supporters in the Five Boroughs. The king was also joined by Bishop
Eadnoth of Dorchester, and possibly his younger brother
Eadwig. The
Battle of Assandun is unusual in how precisely it can be dated, taking place on 18 October, lasting from just after noon to just before midnight, which itself is exceptional for its length. Although he had claimed the high ground, Edmund charged downhill onto Cnut's army, and the Danish line appeared to buckle. Either due to prior planning or fear in battle, Eadric fled from the battle, which opened the door to a decisive Danish victory. The battle is recounted in the ASC C:
Treaty and death According to the Encomiast, the English, "familiar with the locality," were able to withdraw shielded by the night. Edmund suffered significant losses at Assandun including the deaths of many of his allies, as listed by the ASC. Despite this great loss, Edmund was evidently eager to keep fighting. The Encomiast claims that Edmund wished to "assemble a more powerful force." Possibly in an effort to raise this army from a fresh source of troops, Edmund travelled to
Gloucestershire. The
Knútsdrapa attests to another battle at a place called Danaskógar – likely referring to the
Forest of Dean – and that the English were massacred, though its reliability is questionable. Edmund and Cnut had reached a standstill after heavy fighting, and the English magnates, supposedly led by
Eadric were increasingly pushing him to make peace. Edmund ultimately met with Cnut at Alney, near
Deerhurst, at which point hostages were exchanged. The two leaders encamped their armies on opposite sides of the
Severn, and sailed to an island within the Severn, where talks were held. Edmund and Cnut declared their friendship and paid off Cnut's army. The ASC C records the agreement as follows: The D Manuscript records the event differently: Cnut and his allies received all of England north of Wessex. Possibly suggested by Edmund's messengers, this agreement left Edmund with the political heartland of the kingdom. Edmund died on 30 November 1016 after ruling for 222 days, possibly at London or Oxford. The cause is unknown, but he could have died from disease or injuries. Contemporary accounts do not suggest that he was murdered, but soon after the Norman Conquest,
Adam of Bremen wrote that he had been poisoned. Cnut had a proven record for assassinating his opponents, and McDermott attributes some merit to Adam's claim. Various twelfth-century writers stated that he was stabbed or shot with an arrow while sitting on a toilet, however it's unlikely these are true. Edmund probably died due to exhaustion from campaigning, and there is no evidence he was murdered. == Aftermath ==