This chapter discusses stories describing pairs of brothers representing rival groups—such as two cities, two tribes, two families, two kingdoms, and so forth—that form a pattern characteristic of the origin story genre of the ancient eastern Mediterranean basin. In some of these stories, the siblings begin fighting at birth or even in the womb. A similar pattern can be found in the writings of Philo of Byblos, in the story of Samemroumos (Hypsouranios), who bears the same name as a quarter in Sidon, and his brother Ousoos, who represents Ushu, mainland Tyre.