|Son of CEneus of Calydon and Periboea; father of Diomedes. Being obliged to fly from his home, owing to the murder of his paternal uncle Melas, and of his sons, he took refuge with Adrastus (q.v.) at Argos, and married his daughter Deipyle. Though small of stature, he possessed a bold spirit and great strength, together with the special favour of Athene. As one of the Seven against Thebes, he was sent to Thebes before the commencement of hostilities in the hope of coming to terms with the Theban chiefs. He found them banqueting with their king Eteocles. On their refusal to listen to him, he called them out to combat, and defeated them one after the other. On his return, the Thebans, in revenge, laid an ambuscade, consisting of fifty youths, under two leaders; but with the help of Athene he slew them all, and only suffered one of the leaders, Maeon, son of Haemon, to escape. In the disastrous conflict under the walls of Thebes, he was fatally wounded by the Theban Melanippus, when Athene, with the permission of Zeus, appeared to grant him life and immortality. Then his old antagonist, Amphiaraus, laid before him the head of Melanippus, whom he had just slain; and Tydeus, in savage fury, cleft open his skull and sucked out the brain of his enemy. Outraged by this horrible deed, the goddess recoiled from his presence and delivered him over to death. The corpse was buried by Maeon out of gratitude for having been spared by Tydeus.