Hystaspes (father of Darius I)
![](http://upload.wikimedia.org/wikipedia/commons/thumb/c/c8/Lineage_of_Darius_the_Great.jpg/220px-Lineage_of_Darius_the_Great.jpg)
Position of Hystaspes in the Achaemenid lineage according to Darius the Great in the Behistun inscription.
![](http://upload.wikimedia.org/wikipedia/commons/thumb/d/df/India_500_BCE.jpg/220px-India_500_BCE.jpg)
According to Ammianus Marcellinus, Hystaspes penetrated deep into India, where he learned from the Brahmins.[1] Historically, this corresponds to the time of the Achaemenid conquest of the Indus Valley.
![](http://upload.wikimedia.org/wikipedia/commons/thumb/5/51/Niebuhr_inscription_1.jpg/220px-Niebuhr_inscription_1.jpg)
A "Niebuhr inscription" reading "Darius the Great King, King of Kings, King of countries, son of Hystaspes, an Achaemenian, who built this Palace".[2]
Hystaspes (Greek: Ὑστάσπης), Vishtaspa (Old Persian: WIKI