Nobility in the Kingdom of Hungary in the context of "Béla IV"

John Hunyadi (Hungarian: Hunyadi János; Romanian: Ioan de Hunedoara; Croatian: Janko Hunjadi; Serbian: Сибињанин Јанко, romanized: Sibinjanin Janko; Ottoman Turkish: حونیادی یانوش, romanized: Hünyadi Yanoş; c. 1406 – 11 August 1456) was a leading Hungarian military and political figure during the 15th century, who served as regent of the Kingdom of Hungary from 1446 to 1453, under the minor Ladislaus V.

According to most contemporary sources, he was the member of a noble family of Wallachian ancestry. Through his struggles against the Ottoman Empire, he earned for himself the nickname "Turk-buster" from his contemporaries. Due to his merits, he quickly received substantial land grants. By the time of his death, he was the owner of immense land areas, totaling approximately four million cadastral acres, which had no precedent before or after in the Kingdom of Hungary. His enormous wealth and his military and political weight were primarily directed towards the purposes of the Ottoman wars.

Béla IV (1206 – 3 May 1270) was King of Hungary and Croatia between 1235 and 1270, and Duke of Styria from 1254 to 1258. As the oldest son of King Andrew II, he was crowned upon the initiative of a group of influential noblemen in his father's lifetime in 1214. His father, who strongly opposed Béla's coronation, refused to give him a province to rule until 1220. In this year, Béla was appointed Duke of Slavonia, also with jurisdiction in Croatia and Dalmatia. Around the same time, Béla married Maria, a daughter of Theodore I Laskaris, Emperor of Nicaea. From 1226, he governed Transylvania as duke. He supported Christian missions among the pagan Cumans who dwelled in the plains to the east of his province. Some Cuman chieftains acknowledged his suzerainty and he adopted the title of King of Cumania in 1233. King Andrew died on 21 September 1235 and Béla succeeded him. He attempted to restore royal authority, which had diminished under his father. For this purpose, he revised his predecessors' land grants and reclaimed former royal estates, causing discontent among the noblemen and the prelates.

The Mongols invaded Hungary and annihilated Béla's army in the Battle of Mohi on 11 April 1241. He escaped from the battlefield, but a Mongol detachment chased him from town to town as far as Trogir on the coast of the Adriatic Sea. Although he survived the invasion, the Mongols devastated the country before their unexpected withdrawal in March 1242. Béla introduced radical reforms in order to prepare his kingdom for a second Mongol invasion. He allowed the barons and the prelates to erect stone fortresses and to set up their private armed forces. He promoted the development of fortified towns. During his reign, thousands of colonists arrived from the Holy Roman Empire, Poland and other neighboring regions to settle in the depopulated lands. Béla's efforts to rebuild his devastated country won him the epithet of "second founder of the state" (Hungarian: második honalapító).

Charles I, also known as Charles Robert (Hungarian: Károly Róbert; Croatian: Karlo Robert; Slovak: Karol Róbert; Italian: Caroberto; (1288 – 16 July 1342), was King of Hungary and Croatia from 1308 to his death. He was a member of the Capetian House of Anjou and the only son of Charles Martel, Prince of Salerno. His father was the eldest son of Charles II of Naples and Mary of Hungary. Mary laid claim to Hungary after her brother, Ladislaus IV of Hungary, died in 1290, but the Hungarian prelates and lords elected her cousin, Andrew III, king. Instead of abandoning her claim to Hungary, she transferred it to her son, Charles Martel, and after his death in 1295, to her grandson, Charles. On the other hand, her husband, Charles II of Naples, made their third son, Robert, heir to the Kingdom of Naples, thus disinheriting Charles.

Charles came to the Kingdom of Hungary upon the invitation of an influential Croatian lord, Paul Šubić, in August 1300. Andrew III died on 14 January 1301, and within four months Charles was crowned king, but with a provisional crown instead of the Holy Crown of Hungary. Most Hungarian noblemen refused to yield to him and elected Wenceslaus of Bohemia king. Charles withdrew to the southern regions of the kingdom. Pope Boniface VIII acknowledged Charles as the lawful king in 1303, but Charles was unable to strengthen his position against his opponent. Wenceslaus abdicated in favor of Otto of Bavaria in 1305. Because it had no central government, the Kingdom of Hungary had disintegrated into a dozen provinces, each headed by a powerful nobleman, or oligarch. One of those oligarchs, Ladislaus III Kán, captured and imprisoned Otto of Bavaria in 1307. Charles was elected king in Pest on 27 November 1308, but his rule remained nominal in most parts of his kingdom even after he was crowned with the Holy Crown on 27 August 1310.

The Duke of Transylvania (Hungarian: erdélyi herceg; Latin: dux Transylvaniae) was a title of nobility four times granted to a son or a brother of the Hungarian monarch. The dukes of the first and second creations, Béla (1226–1235) and Stephen (1257–1258 or 1259, 1260–1270) of the Árpád dynasty were in fact viceroys with significant authority in Transylvania. The duke of the third creation, Louis, did not administer the province. The fourth duke, Stephen of the Anjou dynasty (1350–1351) did not play any significant role in politics.

The Duke of Slavonia (Croatian: slavonski herceg; Latin: dux Slavoniae), also meaning the Duke of Dalmatia and Croatia (Croatian: herceg Hrvatske i Dalmacije; Latin: dux Dalmatiae et Croatiae) was a title of nobility granted several times in the 12th and 14th centuries, mainly to relatives of Hungarian monarchs or other noblemen.

The title of duke of "whole of Slavonia" didn't mean Slavonia in the narrow sense, but specifically all Slavic lands of the Kingdom of Hungary, being a synonym for the Kingdom of Croatia and Dalmatia (and Slavonian domain). An example being 1231 charter by Coloman in which protected "omnes templarios, qui infra ducatum Sclavonie sunt, tam in Dalmatia, quam in Croatia" ("all the Templars who are within the Duchy of Sclavonia, both in Dalmatia and in Croatia"). The title of duke signified a more extensive power than that of the Ban of Slavonia or Ban of Croatia. In cca. 1185 during Hungarian king Béla III, the "dux Sclauonie" paid to the king each year ten thousand silver coins.

A castle warrior or castle serf (Hungarian: várjobbágy, Latin: iobagio castri) was a landholder obliged to provide military services to the ispán or head of a royal castle district in the medieval Kingdom of Hungary. Castle warriors "formed a privileged, elite class that ruled over the mass of castle folk" (Pál Engel) from the establishment of the kingdom around 1000 AD. Due to the disintegration of the system of castle districts, many castle warriors became serfs working on the lands of private landholders in the 13th and 14th centuries; however, some of them were granted a full or "conditional noble" status.

A royal servant (Hungarian: szerviens, Latin: serviens regis) was a freeman in the Kingdom of Hungary in the 13th century who owned possession and was subordinate only to the king. The expression was documented for the first time in a charter issued in 1217. By the end of the 13th century, the use of the expression ceased, and the "royal servants" merged into the nobility of the kingdom and they formed the basis of the lesser nobility.

In the 11-12th centuries, the ancestors of the "royal servants" can be found among the "freemen" who provided military services to the kings and whose troops were led by the kings and not by the heads of the "royal counties". "Castle warriors" also increased the number of "royal servants" if the king liberated them from the services they had been obliged to provide to the heads of the royal castles. Even serfs could receive their liberties provided that the king not only liberated them personally but also granted them possessions.

A conditional noble or predialist (Hungarian: prédiális nemes; Latin: nobilis praedialis; Croatian: predijalci) was a landowner in the Kingdom of Hungary who was obliged to render specific services to his lord in return for his landholding, in contrast with a "true nobleman of the realm" who held his estates free of such services. Most conditional nobles lived in the border territories of the kingdom, including Slavonia and Transylvania, but some of their groups possessed lands in estates of Roman Catholic prelates. Certain groups of conditional nobility, including the "ecclesiastic nobles" and the "nobles of Turopolje" preserved their specific status until the 19th century.