The state was ruled by two hereditary kings of the Agiad and Eurypontid families , both supposedly descendants of Heracles and equal in authority .
One could not act against the power and political enactments of his colleague .
The state was ruled by two hereditary kings of the Agiad and Eurypontid families , both supposedly descendants of Heracles and equal in authority , so that one could not act against the power and political enactments of his colleague .