text: The lords of the castles had to hire a professional staff for the defence of the castle and the management of its appurtenances. They primarily employed nobles who held nearby estates, which gave rise to the development of a new institution, known as . A  was a nobleman who entered into the service of a wealthier landowner in exchange for a fixed salary or a portion of revenue, or rarely for the ownership or usufruct (right to enjoyment) of a piece of land. Unlike a conditional noble, a  remained  an independent landholder, only subject to the monarch.
  From the 1270s, the monarchs' coronation oath included a promise to respect the noblemen's liberties. The counties gradually transformed into an institution of the noblemen's local autonomy. Noblemen regularly discussed local matters at the counties' general assemblies. The  (the counties' law courts) became important elements in the administration of justice. They were headed by the  or their deputies, but they consisted of four (in Slavonia and Transylvania, two) elected local noblemen, known as judges of the nobles.
  Hungary fell into a state of anarchy because of the minority of Ladislaus IV () in the early 1270s. To restore public order, the prelates convoked the barons and the delegates of the noblemen and the nomadic Cumans who had settled in Hungary to a general assembly near Pest in 1277. This first Diet (or parliament) declared the fifteen-year-old monarch to be of age in an attempt to put en end to the anarchy. In the early 1280s, Simon of Kéza associated the Hungarian nation with the nobility in his Deeds of the Hungarians, emphasizing that the community of noblemen held real authority.