Greeks Named Caspian Sea for Caspi Tribe of Mardos River Valley in Alborz Arabs Called It Gulan Sea & Iranians Khazar

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The ancient Arab name for the Caspian Sea was Bahr-e Gulan, at its southern shore Golestan named for Aram’s son Hul (a grandson of Shem, see Genesis 10), and the Persians called it the Darya-e Khazar, for a son of Togarmah (who was a grandson of Japheth)), then later the Greeks beginning with Strabo named it for a tribe in Golestan called the Caspi, of the Mardos river valley.