Iran

The Persians, in naming their country, make use of one word, which they indifferently pronounce Iroun, and Iran.

"Kavi means a king, but it is particularly used of the kings belonging to the second and most celebrated of the two mythical dynasties of Iran."

"One certain fact is the occurrence of geographical names [Bactria, Sogdiana, etc] in Vendidad I, which are obviously intended to describe the earliest homes of the Iranian races whose lore was the Avesta."