Ancient king of Média Ishtu-Megu ,whose name may mean Great God or Unique God ,is regarded to be identical with Astyagés who ruled until about 577 b.c. in Média, grandfather of Kyros Agradatés.
Astyagés' name corresponds also to armenian word Astwadz meaning also God,so Ishtu-an would approximately mean the same as Astwadzyan.
Perhaps he descended from an earlier king of Ar-Ga-Me-yan-Na at river Awab-Bag-Ka - that is Ob now - in the days of king Dayawa-De called Eg-Hen-Nayanna son of Anneg-ha-Sha of Shang dynasty,possible ancestor of nganasa and of inngasana,and was therefore also named Hen'g-Istu translated into persian awasta langauge as Aspa-Da.
Samoyed word for north : Ngerm comes from awasta expression "not hot" : Na-Germ.
Jews and christians read Aammon and Yabbok,Dawid,Khanun and Nakhash.
See Körmendi,Vastag,Kövér,Magyar,Diamant,Grossbart,Kalotaszegi,Urs,Henning and others !
Balázs Déri