 Also the Physician Ctesias who served in the court of the Persian king Artaxerxes II of Persia writes in his book "Persica" as summarized by Photios that the name Cyrus is from Persian word "Khur" (the sun).These are, however, not accepted by modern scholars.Regarding the etymology of Old Persian "kuruš", linguists have proposed various etymologies based on Iranian languages as well as non-Indo-European ones.