The war of the Seven had two important sequels. The sons of the fallen chieftains, together with Aigialeus son of Adrastos, set forth once again to attack Thebes, and this time were successful. This was the war of the Epigonoi, or Younger Generation. The Thebans evacuated the city, and the aged Adrastos, who had led the army, died on the way home at Megara, from grief for his son, who alone had fallen in the campaign. Thus in the first expedition of the Seven, all the Argive leaders perished except the king of Argos himself (Adrastos), whereas in the second expedition none perished except the king of Argos himself and his heir. So the throne at Argos fell vacant and available for occupation by Diomedes, whom we find seated upon it in the Iliad. The date of this second Argive expedition against Thebes is supposed to be shortly before the Trojan War. The Catalogue of Ships in the Iliad, which is practically a survey of the geography of pre-Dorian Greece, does not mention Thebes, but only Hypothebai, i.e., Lower Thebes, doubtless meant to be understood as a settlement which had grown up, or subsisted after the attack of the Epigonoi, at the foot of the ruined and abandoned citadel.
The other notable event following the fall of Thebes was the revenge of Alkmeon (or Alkmaion) son of Amphiaraos. Concerning it, read the file about Alkmaion.