Yngve and Alf were the two sons of a Nordic (Swedish) conqueror of northern Europe, sometime around the year 1000 A.D., according to the literature anthology, The Harvard Classics. On one foray into northern Europe, the father was killed and the two sons returned to Scandinavia to mourn their father's death in battle. Never having learned any more than conquest, the two sons began to fight each other. In the end one son killed the other; however, the text is incomplete and which son survived is not clear.