sentences:  The genealogy offered in the earliest literary reference, Euripides' "Iphigenia in Tauris", would place him two generations before the Trojan War, making him the great-grandfather of the Atreides, Agamemnon and Menelaus.King Oenomaus, fearful of a prophecy that claimed he would be killed by his son-in-law, had killed eighteen suitors of his daughter Hippodamia after defeating them in a chariot race.He affixed their heads to the wooden columns of his palace.