Tostig, earl of Northumbria (
c. 1025–66), younger brother of
Harold, who was briefly, in 1066, king of England. With Tostig's appointment to Northumbria, his family seemed set to dominate the English kingdom. But he was driven out by a local rebellion in 1065. He blamed Harold for not attempting to secure his reinstatement, and in exile raised a force which raided the English coast. Achieving little, he joined the army led by
Harold Hardrada, king of Norway, and was killed at the battle of
Stamford Bridge.