Eteocles

One of those brothers lies in state: Eteocles, the original claimant to the throne.

There was Eteocles, a son of Oedipus in Greek mythology, who remained on the throne of Thebes, reneging on his promise to share it with his twin brother, leading to a battle in which they killed each other.

Eteocles succeeded although he was the younger, and he expelled his brother from Thebes.

Polyneices, the one who attacked it, had the better right to it, but the younger, Eteocles, was fighting for Thebes, to save her from capture.

He had two sons, Polyneices and Eteocles, and two daughters, Antigone and Ismene.