I believe the correct answer is: Eteocles was loyal to Thebes.
In Sophocles’ drama “Antigone”, Creon puts the law above everyone, even above his family. Creon is the uncle of Antigone, Ismene and Eteocles and Polyneices. Polyneices claimed the crown and led a rebellion, which is why he was declined the right to be buried. On the other side, Eteocles was loyal Thebes and was granted the right to be buried.