Actually, it means "region beyond" in Hebrew. Heber (or Eber) is the ancestor of the Hebrews, who were obviously named after him. The name takes various forms, including Ibri, Ivri, Eber, Ebri, Ever, and even the Gaelic Eibhear. Tribal names derived from Heber have been documented in Ireland, Scandinavia, and as far away as Japan.