but soon he departed , and after he had given counsel to meneldil , his brother 's son , and had committed to him the realm of the south , he bore away the ring , to be an heirloom of his house , and marched north from gondor by the way that elendil had come ; and he forsook the south kingdom , for he purposed to take up his father 's realm in eriador , far from the shadow of the black land .