English: 10,500-15,000; Norwegian: 9,000-11,000 (of which around 3,000 arrived late in the battle),; supported by over 300 ships
The Battle of Stamford Bridge took place at the village of Stamford Bridge, East Riding of Yorkshire, in England, on 25 September 1066, between an English army under King Harold Godwinson and an invading Norwegian force led by King Harald Hardrada and the English king's brother Tostig Godwinson. After a bloody battle, both Hardrada and Tostig, along with most of the Norwegians, were killed. Although Harold Godwinson repelled the Norwegian invaders, his army was defeated by the Normans at Hastings less than three weeks later.
The battle has traditionally been presented as marking the end of the Viking Age, although major Scandinavian campaigns in Britain and Ireland occurred in the following decades, such as those of King Sweyn Estrithson of Denmark in 1069–1070 and King Magnus Barefoot of Norway in 1098 and 1102–1103.
The death of the childless King Edward the Confessor of England in January 1066 had triggered a succession struggle in which a variety of contenders from across Northwestern Europe fought for the English throne. These claimants included the King Harald Hardrada of Norway. According to the Anglo-Saxon Chronicle Manuscript D, the Norwegians assembled a fleet of 300 ships to invade England. The authors, however, did not seem to differentiate between warships and supply ships. In King Harald's Saga, Snorri Sturluson states, "It is said that King Harald had over two hundred ships, apart from supply ships and smaller craft." Combined with reinforcements picked up in Orkney, the Norwegian army most likely numbered between 7,000 and 9,000 men. Arriving off the English coast in September, King Hardrada was joined by further forces recruited in Flanders and Scotland by Tostig Godwinson. Tostig was at odds with his elder brother Harold (who had been elected king by the Witenagemot on the death of King Edward). Having been ousted from his position as Earl of Northumbria and exiled in 1065, Tostig had mounted a series of abortive attacks on England in the spring of 1066.
In the late summer of 1066, the invaders sailed up the Ouse before advancing on York. On 20 September they defeated a northern English army led by Edwin, Earl of Mercia, and his brother Morcar, Earl of Northumbria, at the Battle of Fulford, outside York. Following this victory they received the surrender of York. Having briefly occupied the city and taken hostages and supplies from the city, they returned towards their ships at Riccall. They offered peace to the Northumbrians in exchange for their support for Hardrada's bid for the throne, and demanded further hostages from the whole of Yorkshire.
The site of Battle of Stamford Bridge 1066 lies on Triassic Rocks (Undifferentiated), bedrock that formed in the Triassic. The rock here is sandstone and conglomerate, interbedded.
This battlefield is listed on the Register of Historic Battlefields — a national designation identifying Britain's most significant battle sites for protection and further research. Reference: NHLE 1000035.
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