The Cracow castellan Klemens was the founder of the convent o f Cistercian nuns at Łubnice on the Prosną. Between 1239 and 1241 he made several endowments over to the convent at Ołobok. The original endowment o f the Łubnice foundation consisted chiefly of benefice estates, ie. part of the village Łubnice (with Dzietrzkowice), Mieleszyn, Chróścin, Ochędzyn and Skomlin. From Klemens’s patrimonial estate the new foundation got the village of Konarzewo and a plot at Pudliszki. In addition the Cistercian nuns were presented by Archbishop Pełka with tithes from some estates in the Archdiocese of Gniezno.After Klemens’s death in 1241 the management of the foundation passed into the hands of his brother Wierzbięta and Klemens’s widow Racława. They wanted to attach the Łubnice estate to the lands o f the Benedictine nuns from Staniątki, but the plan failed. The setting up o f the Łubnice Priorate did not take place until 1241-1244. The first nuns to arrive at Łubnice came from Ołobok. The Priorate had no more than six nuns; the convent was ruled by the Abbess of Ołobok.In 1249 the Ołobok community was transferred to Łubnice and the two convents were amalgamated. The union was necessitated by the difficult financial situation of the Ołobok nuns. The convent at Łubnice functioned probably until 1253, ie. ten years in all, before moving again to Ołobok.