What title was held by the man who was thought to have died at the Battle of Stamford Bridge, who also spent 15 years in exile?
Harald Hardrada Harald Sigurdsson (Old Norse: "Haraldr Sigurðarson" ;  1015 – 25 September 1066), given the epithet Hardråde ("harðráði ", roughly translated as "stern counsel" or "hard ruler") in the sagas, was King of Norway (as Harald III) from 1046 to 1066. In addition, he unsuccessfully claimed the Danish throne until 1064 and the English throne in 1066. Prior to becoming king, Harald had spent around fifteen years in exile as a mercenary and military commander in Kievan Rus' and of the Varangian Guard in the Byzantine Empire.
Battle of Stamford (918) The Second Battle of Stamford occurred when King Edward assaulted Stamford in late May 918. It soon fell to the army of Wessex. Later that year, Edward built a second burh on the south side of the River Welland. The ramparts of the northern burh may have been approximately 3100 ft ("c." 750 hides) from Roffe, and the Edwardian burh around 2700 ft ("c." 650 hides).