sentences:  Whatever one makes of the discrepancy, the sagas – including "Heimskringla" – are unanimous in making Haakon Eric's younger half-brother and successor.According to "Heimskringla" and "Egils saga", Eric spent much of his childhood in fosterage with the "hersir" Thórir son of Hróald.Of his adolescent years, a remarkable picture is painted in "Heimskringla," which recounts that Eric, aged twelve and seemingly possessed of prodigious valour and strength, embarked on a career of international piracy