ヘンリク1世
During the last years of his reign, Bolesław devoted himself to economic and business activity. Colonization, initially from poor German areas, substantially accelerated the economic development of the duchy, and was continued by his son Henry I the Bearded. Bolesław founded the Cistercian Abbatia Lubensis abbey in Lubiąż with the collaboration of monks from Pforta, across the Saale River in Thuringia. Later the abbey became the Silesian ducal burial place.