In Greek mythology, Dorus is a son of Hellen who was the eponymous founder of the Dorians. Each of Hellen's sons founded a primary tribe of Greece: Aeolus the Aeolians, Dorus the Dorians and Xuthus the Achaeans (from Xuthus's son Achaeus) and Ionians (from Xuthus's adopted son Ion, in truth a son of the god Apollo), aside from his sister Pandora's sons with Zeus. According to the Bibliotheke, "Dorus received the country over against Peloponnese and called the settlers Dorians after himself."