Antigone

In the play, Antigone, two of the sons of Oedipus and Jocasta both die in battle on opposing sides and the king banned the burial of the brother who fought on the opposite side. I believe she will go through with attempting to bury her brother, but will end up being killed for treason. Despite her sister, Ismene fearing the punishments of burying her brother, the loss of her sister may get her persuaded to bury them both, thinking that family comes before law.