Laocoön is a Trojan priest of Poseidon (or Neptune), whose rules he had defied, either by marrying and having sons, or by having committed an impiety by making love with his wife in the presence of a cult image in a sanctuary. His minor role in the Epic Cycle narrating the Trojan War was of warning the Trojans in vain against accepting the Trojan Horse from the Greeks—"A deadly fraud is this," he said, "devised by the Achaean chiefs!"—and his subsequent divine execution by two serpents sent to Troy across the sea from the island of Tenedos, where the Greeks had temporarily camped.