In Greek mythology, Polynices and six allies (the Seven Against Thebes) attacked Thebes because Polynices' brother, Eteocles, refused to give up the throne as promised. All seven would-be conquerors were killed. Their children swore vengeance and attacked Thebes. This was called the Battle of the Epigonoi ("posthumous").
The Epigonoi were Aegealeus, Alcmaeon, Diomedes, Thersander, Euryalus, Amphilochus, Promachus, Polydorus, Sthenelus, Laodamas.