Based on a well-preserved written material documenting the division of family property of Wolfgang of Krajk (d.1491) between his sons and heirs, we can ask a number of questions directly or indirectly related to the viability of these texts. Three documents have survived and they reflect three phases during which the Krajk estate was divided. Registers where individual villages were recorded (including their payment and in kind duties), feudal farms and work duties had to be prepared before the first deed was written in March 1487. Wolfgang of Krajk divided his family demesne into three parts by means of this deed. It was possible to study the Krajk demesne registers which survived along with the related deeds not only with regard to the landscape (such as the state of the pond network) and settlement development (development of residential network - many villages were mentioned in the registers of 1487 for the very first time, there were villages which ceased to exist temporarily or permanently, a network of farms and feudal manors and others), but also with regard to formal aspects. The extant sources suggested also other aspects and a broader context - namely the formation of Nova Bystrice as a noble residential town with usual attributes of noble residential towns during the late Middle Ages, and an effort to achieve indivisibility of the family demesne. The appendix contains edited registers (1847), three deeds by means of which Wolfgang of Krajk gradually divided his estate between his sons (1487, 1489, 1490) and the text of a Jan of Selmberk's testimony (1491) given during disputes between members of the Krajir family. The fact that so soon disputes broke out among the brothers and subsequently the family estate was divided, illustrates the traditional contradiction between testator's wish (the three Wolfgang's deeds were in fact tools intended to arrange his own estate) and the actual situation.