Darius
: king of Persia after Cyrus and Artaxerxes Smerdis; Darius I,son of Ahasuerus; Darius II the Mede,king of Persia after Darius II; Darius III the Persian Media
: a country on the SW coast of the Caspian Sea
(34° 47´, 48° 30´)
Tigris
: a major northern and parallel tributary of the Euphrates River
(35° 59´, 43° 20´)