Harald Hardrada Falls at Stamford Bridge

On September 25, 1066, King Harold Godwinson of England achieved a devastating victory over an invading Scandinavian army at Stamford Bridge in Yorkshire. The conflict emerged from the succession crisis that followed the death of King Edward the Confessor in January of that year. Contenders across northwestern Europe pressed claims to the English throne, among them King Harald Hardrada of Norway. Gathering an expedition of several hundred vessels, Hardrada sailed for Britain and gained the allegiance of Tostig Godwinson, the English king's estranged brother and former Earl of Northumbria. Hardrada's forces routed a regional English army outside York at the Battle of Fulford on September 20, prompting the city to capitulate and agree to provide provisions and additional hostages.

King Harold had positioned his forces in southern England to defend against an expected invasion by William, Duke of Normandy. Upon receiving intelligence of the northern invasion, Harold assembled his elite housecarls and local thegns, marching some 185 miles from London to Yorkshire in about four days, by one account. The speed of the English army allowed it to advance through York undetected by the invaders. Expecting only the delivery of hostages and tribute at the River Derwent crossing, the Norwegian commanders were caught completely unprepared when the English force appeared in the distance.