Alastor

Alastor was the spirit of family blood feuds and the infliction of vengeance upon a new generation for the crimes of their fathers. He was a son of Neleus the king of Pylos and Chloris.

Alastor was closely identified with the Erinyes, who punished murderers. However, Alastor inspired anger towards the family of the murderer rather than anger towards just the murderer, which is what the Erinyes inspired.