I want to know the answer to the following question:
Privilege of Piotrkow was granted when?
All the background I'm provided with is that "It bound the peasant to the land, as only one son (not the eldest) was permitted to leave the village; townsfolk (Polish: "mieszczaństwo") were prohibited from owning land; and positions in the Church hierarchy could be given only to nobles.". Is that enough to answer the question?