Telephus

Greek The son of Heracles and Auge, a Tegean princess. Telephus became the king of Mysia, in Asia Minor, where the Greeks landed on their way to Troy. The Greek hero Achilles wounded Telephus in an ensuing scuffle. He was told by an Oracle that his wound could be cured only by the one who had inflicted it. Telephus went to the Greek camp and sought out Achilles. Since another oracle had told Achilles that only Telephus could show him the way to Troy, Achilles obligingly scraped some rust from his spear into the wound of Telephus, curing him. Telephus showed the Greeks the way to Troy, where they were victorious.