cALchAs

Greek The sinister seer who prophesied doom throughout Homer's iliAd. He was a priest of Apollo and was called the son of Thestor. Calchas accompanied the Achaeans (Greeks) on their expedition to Troy during the Trojan War. It was Calchas who advised Agamemnon to sacrifice his daughter Iphigenia to gain fair winds for the expedition to Troy, and it was Calchas who asserted that there would be no victory for the Greeks without the help of Achilles.