Te Waharoa's final lesson to the Ngapuhi was administered in 1831, and effectually stopped them from making raids on their southern neighbours. A war-party from the Bay of Islands, in which were two of Hongi's sons, ventured, though only 140 strong, to sail down the Bay of Plenty, slaying and plundering as they went. Twice they landed, and when they had slain and eaten more than their own number the more prudent would have turned back. But a blind wizard, a prophet of prodigious repute, who was with them, predicted victory and speedy reinforcement, and urged them to hold on their way. Disembarking on an islet in the bay, the inhabitants of which had fled, they encamped among the deserted gardens. Looking out next morning, they saw the sea blackened with war-canoes. Believing these to be the prophesied reinforcement, they rushed down to welcome their friends. Cruelly were they undeceived as the canoes of Te Waharoa and his Tauranga allies shot on to the beach. Short was the struggle. Only two of the Ngapuhi were spared, and as the blind soothsayer's blood was too sacred to be shed, the victors pounded him to death with their fists. Never again did the Ngapuhi come southwards. So for the remaining years of his life Waharoa was free to turn upon the Arawas, the men who had slain his father and mother. From one raid on Rotorua his men came back with the bodies of sixty enemies--cut off in an ambush. Not once did Waharoa meet defeat; and when, in 1839, he died, he was as full of fame as of years. Long afterwards his _mana_ was still a halo round the head of his son Wiremu Tamihana, whom we shall meet in due time as William Thompson the king-maker, best of his race.