Harald III of Norway (1015 – September 25, 1066) was born Harald Sigurðarson, but known as Harald Hardrada. He became king of Norway, and thought that he was the rightful heir to the throne of England. In 1066 he invaded England, and was killed at the Battle of Stamford Bridge by the army of Harold Godwinson, the last Anglo-Saxon King of England.
When Harold Godwinson became king of England on the death of Edward the Confessor, Hardrada joined forces with Tostig, Harold’s brother, and took an invasion fleet of approximately 300 ships to England to press his own claim. He raided the east coast, burning Scarborough, then sailed up the Humber river.