Generations of historians strived (and they still continue to do so) to deduce, what were the property rights of Mstiš to the homestead at the settlement near the Bilin castle and to the newly built Church of Saint Peter in its vicinity. The outcome of the analysis is unconvincing: Cosmas’ text itself does not enable any unambiguous conclusions on the nature of Mstiš’ rights to the homestead and church. It is possible that localities endowed with names derived from the names of castle custodians and other persons from the ranks of the princely retinue indicate one of the manners in which these individuals could gain land ownership. At least in some of the cases, the custodians could proceed to dispose of the property autonomously and bequeath it to an ecclesiastical institution or establish a similar institution themselves. and Tomáš Velímský.