Northumbrian Revolt of 1065

The Northumbrian Revolt of 1065 was a rebellion in the last months of the reign of Edward the Confessor against the earl of Northumbria, Tostig Godwinson, brother of Harold Godwinson, Earl of Wessex. Tostig, who had been earl since 1055, is said to have provoked his nobles to rise against him by his harsh administration of justice, raising of tax levels, frequent absences from his earldom, and murder of several political opponents. In October 1065 the rebels entered Northumbria's capital, York, killed Tostig's men, looted his treasury, renounced their allegiance to Tostig and proclaimed Morcar, brother of Edwin, Earl of Mercia, as their new earl. They then marched south to Northampton, causing much devastation in Yorkshire and the North Midlands as they went, and joining forces with the army of Mercia. The king sent his chief earl, Harold Godwinson, to negotiate with them, and when they refused to compromise on the deposition of Tostig he tried and failed to raise his own army against them. On Harold's advice, he finally gave in to their demands and recognised Morcar. Tostig was sent into exile in Flanders, from where, disgusted at what he saw as his brother's betrayal, he shortly afterward raided the English coast, finally dying in arms against him at the Battle of Stamford Bridge.

The Northumbrian Revolt was seen at the time, and is still often seen, as the first stage in the destabilising of the English kingdom that led up to the Norman Conquest.