Final answer:
Polynices brought seven great heroes with him when he attacked his brother who was ruling in Thebes. These heroes were killed in battle and their statues were erected in a sanctuary.
Step-by-step explanation:
Polynices brought seven great heroes with him when he attacked his brother who was ruling in Thebes. These heroes are referred to as 'the chieftains' in the text. The heroes were killed in battle at the wall of Thebes, and their statues were erected in a sanctuary. This information is mentioned in the Description of Greece by Pausanias.