Artobazan claimed the crown as the eldest of all the children; while Xerxes, on the other hand, argued that he was sprung from Atossa, the daughter of Cyrus, and that it was Cyrus who had won the Persians their freedom. Xerxes was also helped by a Spartan king in exile who was present in Persia at the time, Eurypontid king Demaratus, who also argued that the eldest son does not universally mean they have claim to the crown, as Spartan law states that the first son born while the father is king is the heir to the kingship. Some modern scholars also view the unusual decision of Darius to give the throne to Xerxes to be a result of his consideration of the unique positions that Cyrus the Great and his daughter Atossa enjoyed. Artobazan was born to "Darius the subject", while Xerxes was the eldest son born in the purple after Darius's rise to the throne, and Artobazan's mother was a commoner while Xerxes's mother was the daughter of the founder of the empire.