By the influence of Coudenberg, John III., Duke of Brabant, gave to the three friends the old hermitage of Groenendael, or the Green Valley, in the forest of Soignes, near Brussels. They entered into possession on the Wednesday of Easter week, 1343; and for five years lived there, as they had lived in the little house in Brussels, with no other rule save their own passion for perfection. But perpetual invasions from the outer world, not only of penitents and would-be disciples—for their reputation for sanctity grew quickly—but of huntsmen in the forest and pleasure parties from the town, who demanded and expected hospitality, soon forced them to adopt some definite attitude towards the question of enclosure. It is said that Ruysbroeck begged for an entire seclusion; but Coudenberg insisted that this was contrary to the law of charity, and that some at least of those who sought them must be received. In addition to these practical difficulties, the Prior of the Abbey of St. Victor at Paris had addressed to them strong remonstrances, on account of the absence of rule in their life and the fact that they had not even adopted a religious habit; a proceeding which in his opinion savoured rather of the ill-regulated doings of the heretical sects, than of the decorum proper to good Catholics. As a result of these various considerations, the simple and informal existence of the little family was re-modelled in conformity with the rule of the Augustinian Canons, and the Priory of Groenendael was formally created. Coudenberg became its provost, and Ruysbroeck, who had refused the higher office, was made prior; but Hinckaert, now a very old man in feeble health, refused to burden the young community with a member who might be a drag upon it and could not keep the full rigour of the rule. In a spirit of renunciation which surely touches the heroic, he severed himself from his lifelong friend and his adopted son, and went away to a little cell in the forest, where he lived alone until his death.