An unnamed old hunter with an elder son and a younger son.
Background
This man discovered a dead dog, and with his two sons, he decided to split up in search of the culprit. All three were armed with a shotgun.
The man and his elder son were soon alerted to the sound of a gunshot fire, and rushed over to a nearby shack. The younger son had found Castiel, a complete stranger. The father and elder son proceeded to shoot at Castiel, forcing him to flee.