 Todd in his translation of "Cogadh Gaedhel re Gallaibh" suggests that Thorstein and Oistin are the same person, but later historians have rejected this due to "the obvious discrepancy of their dates".A further complication is that the "Pictish Chronicle" says Amlaíb was killed in battle in Scotland, whereas the sagas say Olaf was killed in battle in Ireland.Hudson proposes a solution for this apparent contradiction—the Vikings did not distinguish between the Gaelic peoples of Scotland and Ireland.