The only named character in the series is King Nabu, and is a reference to Nebuchadnezzar II, famous for his building of Babylon.
Adnan died after Nebuchadnezzar II returned to Babylon, after that his son Ma'ad moved away to the region of Central-Western Hijaz after the destruction of the Qedarite kingdom near Mesopotamia, and the remaining Qedarite Arabs there were displaced from their lands and forced to live in Al-Anbar province and the on the banks of the Euphratesriver under the rule of the Neo-Babylonian Empire.
In 605 BC, his son Nebuchadnezzar fought Pharaoh Necho II of Egypt and the remnants of the Assyrian army at the Battle of Carchemish, shortly before Nabopolassar died.