The udvornici, also udvarniks or royal serving people (Hungarian: udvarnokok, Slovak: dvorníci),[1] was a class of half-free people who were obliged to provide well-specified services to the royal court in the medieval Kingdom of Hungary.[2][3] They seem to have been descended from the Slavic population which was subjugated during the Hungarian conquest of the Carpathian Basin.[2] Word udvornici is derived from slavic "U dvora", meaning "at/near the (royal) court". Their lord was the monarch, but they were administered by the Palatine.[4][2]