Louis I of Hungary in the context of "Crown of the Kingdom of Poland"

The Chronicon Pictum or Illuminated Chronicle (Hungarian: Képes Krónika, Slovak: Obrázková kronika, German: Ungarische Bilderchronik, also referred to as the Illustrated Chronicle, Chronica Hungarorum, Chronicon Hungarie Pictum, Chronica Picta or Chronica de Gestis Hungarorum) is a medieval illustrated chronicle from the Kingdom of Hungary from the 14th century. It represents the artistic style of the royal court of King Louis I of Hungary. The codex is a unique source of art, medieval and cultural history.

The chronicle's full name is: Chronicon Pictum – Marci de Kalt Chronica de Gestis Hungarorum (Illustrated Chronicle – Mark of Kalt's Chronicle About the Deeds of the Hungarians).

In the Late Middle Ages, the Kingdom of Hungary, a country in Central Europe, experienced a period of interregnum in the early 14th century. Royal power was restored under Charles I (1308–1342), a scion of the Capetian House of Anjou. Gold and silver mines opened in his reign produced about one third of the world's total production up until the 1490s. The kingdom reached the peak of its power under Louis the Great (1342–1382) who led military campaigns against Lithuania, southern Italy and other faraway territories.

The expansion of the Ottoman Empire reached the kingdom under Sigismund of Luxembourg (1387–1437). In the next decades, a talented military commander, John Hunyadi, directed the fight against the Ottomans. His victory at Nándorfehérvár (present-day Belgrade, Serbia) in 1456 stabilized the southern frontiers for more than half a century. The first king of Hungary without dynastic ancestry was Matthias Corvinus (1458–1490), who led several successful military campaigns and also became the King of Bohemia and the Duke of Austria. With his patronage Hungary became the first country which adopted the Renaissance from Italy.

Stephen Tvrtko I (Serbo-Croatian: Stjepan/Stefan Tvrtko / Стјепан/Стефан Твртко; c. 1338 – 10 March 1391) was the first king of Bosnia. A member of the House of Kotromanić, he succeeded his uncle Stephen II as the ban of Bosnia in 1353. As he was a minor at the time, Tvrtko's father, Vladislav, briefly ruled as regent, followed by Tvrtko's mother, Jelena. Early in his personal rule, Tvrtko quarrelled with his country's Roman Catholic clergy but later enjoyed cordial relations with all the religious communities in his realm. After initial difficulties—the loss of large parts of Bosnia to his overlord, King Louis I of Hungary, and being briefly deposed by his magnates—Tvrtko's power grew considerably. He conquered some remnants of the neighbouring Serbian Empire in 1373, after the death of its last ruler and his distant relative, Uroš the Weak. In 1377, he had himself crowned king of Bosnia and Serbia, claiming to be the heir of Serbia's extinct Nemanjić dynasty.

As the Kingdom of Bosnia continued to expand, Tvrtko's attention shifted to the Adriatic coast. He gained control of the entire Primorje region and the major maritime cities of the area, established new settlements and started building a navy, but never succeeded in subjugating the lords of the independent Serbian territories. The death of King Louis and the accession of Queen Mary in 1382 allowed Tvrtko to take advantage of the ensuing succession crisis in Hungary and Croatia. After bitter fighting, from 1385 to 1390, Tvrtko succeeded in conquering large parts of Dalmatia, and Croatia proper. Following the Battle of Kosovo in 1389, his tenuous claim to Serbia became a mere fiction, as the Serbian rulers he sought to subdue became vassals of the victorious Ottoman Empire. The Ottoman Turks also launched their first attacks on Bosnia during Tvrtko's reign, but his army was able to repel them. Tvrtko's sudden death in 1391 prevented him from solidifying the Kotromanić hold on Croatian lands.

The Kingdom of Hungary held a noble class of individuals, most of whom owned landed property, from the 11th century until the mid-20th century. Initially, a diverse body of people were described as noblemen, but from the late 12th century only high-ranking royal officials were regarded as noble. Most aristocrats claimed ancestry from chieftains of the period preceding the establishment of the kingdom around 1000; others were descended from western European knights who settled in Hungary. The lower-ranking castle warriors also held landed property and served in the royal army. From the 1170s, most privileged laymen called themselves royal servants to emphasize their direct connection to the monarchs. The Golden Bull of 1222 established their liberties, especially tax exemption and the limitation of military obligations. From the 1220s, royal servants were associated with the nobility and the highest-ranking officials were known as barons of the realm. Only those who owned allods – lands free of obligations – were regarded as true noblemen, but other privileged groups of landowners, known as conditional nobles, also existed.

In the 1280s, Simon of Kéza was the first to claim that noblemen held authority in the kingdom. The counties developed into institutions of noble autonomy, and the nobles' delegates attended the Diets (parliaments). The wealthiest barons built stone castles allowing them to control vast territories, but royal authority was restored in the early 14th century. In 1351, King Louis I introduced an entail system and enacted the principle of "one and the selfsame liberty" of all noblemen, but legal distinctions between true noblemen and conditional nobles prevailed. The most powerful nobles employed lesser noblemen as their familiares (retainers) but this private link did not sever the familiaris' direct subjection to the monarch. According to customary law, only males inherited noble estates, but under the Hungarian royal prerogative of prefection the kings could promote "a daughter to a son", allowing her to inherit her father's lands. Noblewomen who had married a commoner could also claim their inheritance – the daughters' quarter (that is one-quarter of their father's possessions) – in land.

Elizabeth of Poland (Hungarian: Erzsébet, Polish: Elżbieta; 1305 – 29 December 1380) was Queen of Hungary by marriage to Charles I of Hungary, and regent of Poland from 1370 to 1376 during the reign of her son Louis I.

Andrew, Duke of Calabria (30 October 1327 – 18 September 1345) was the first husband of Joanna I of Naples, and a son of Charles I of Hungary and brother of Louis I of Hungary.

Elizabeth of Bosnia (Serbo-Croatian: Elizabeta Kotromanić/Јелисавета Котроманић; Hungarian: Kotromanics Erzsébet; Polish: Elżbieta Bośniaczka; c. 1339  – January 1387) was queen consort of Hungary and Croatia, and queen consort of Poland, and, after becoming widowed, the regent of Hungary and Croatia between 1382 and 1385 and in 1386.

Daughter of Ban Stephen II of Bosnia, Elizabeth became Queen of Hungary upon marrying King Louis I the Great in 1353. In 1370, she gave birth to a long-anticipated heir, Catherine, and became Queen of Poland when Louis ascended the Polish throne. The royal couple had two more daughters, Mary and Hedwig, but Catherine died in 1378. Initially a consort with no substantial influence, Elizabeth then started surrounding herself with noblemen loyal to her, led by her favourite, Nicholas I Garai. When Louis died in 1382, Mary succeeded him with Elizabeth as regent. Unable to preserve the personal union of Hungary and Poland, Elizabeth secured the Polish throne for her youngest daughter, Hedwig.