The Dóci (Dóczi; Dóczy) family belonged amongst the important noble houses in the Kingdom of Hungary in the late High Middle Ages; it had its estates mainly in the Transylvanian counties. A new branch of the house arose in the 15th century, with estates in the counties of Upper Hungary, neighbouring the free mining towns in the territory of contemporary central Slovakia. The study observes the relationships between the high noble family and citizens of the free mining towns during the late 15th and early 16th centuries.