died Sept. 25, 1066, Stamford Bridge, Yorkshire, Eng.
Anglo-Saxon earl of Northumbria .
He had strong ties with Norway and became earl of Northumbria in 1055; his severity in subduing the wild northern district stirred revolt in 1065. The rebels won the support of Tostig's brother Earl Harold (later Harold II ) at Oxford, and Tostig went into exile. He gave his services to Harald III Sigurdsson in his invasion of England. Tostig was killed when his brother Harold defeated the invading army at Stamford Bridge.