Whether or not Alaric was a member of an ancient Germanic royal clan—as claimed by Jordanes and debated by historians—is less important than his emergence as a leader, the first of his kind since Fritigern. Theodosius's death left the Roman field armies collapsing and the Empire divided again between his two sons, one taking the eastern and the other the western portion of the Empire, Stilicho made himself master of the West and attempted to establish control in the East as well, and led an army into Greece. Alaric rebelled again. Historian Roger Collins points out that while the rivalries created by the two halves of the Empire vying for power worked to Alaric's advantage and that of his people, simply being called to authority by the Gothic people did not solve the practicalities of their needs for survival. He needed Roman authority in order to be supplied by Roman cities.