Louis I of Hungary

Louis I of Hungary, also known as Louis the Hungarian, was born on March 5, 1326, and ascended to the throne as King of Hungary and Croatia in 1342. He was the first surviving child of Charles I of Hungary and Elizabeth of Poland. His early life was marked by a treaty in 1338 that secured his claim to the Polish throne, contingent upon his uncle's death without a male heir. This agreement required him to assist in reclaiming lost Polish territories.

Upon his succession, Louis inherited a centralized kingdom and a substantial treasury. His reign began with military campaigns, including a crusade against the Lithuanians and efforts to restore royal authority in Croatia. Notably, he sought vengeance against Queen Joanna I of Naples following the assassination of his brother Andrew, leading to two military campaigns in the Kingdom of Naples between 1347 and 1350. Despite his military successes, his rule became unpopular due to the harsh actions of his mercenaries.

Louis was known for his absolute governance, yet he also recognized the rights of the Hungarian nobility at the Diet of 1351, introducing reforms that included a uniform rent system for peasants and confirming their right to free movement. His military endeavors extended to conflicts with the Lithuanians, Serbia, and the Golden Horde, as he sought to reclaim lost territories and exert influence over neighboring regions, although his authority was often nominal.

In 1370, Louis inherited the Polish crown after his uncle's death. Lacking male heirs, he aimed to secure the succession rights of his daughters through the Privilege of Koszyce in 1374. Despite his efforts, his popularity waned in Poland. In his later years, Louis became increasingly devout, acknowledging Urban VI as the legitimate pope during the Western Schism. His reign is remembered in Hungarian history as a period of significant power and influence, with Louis regarded as one of the most formidable monarchs of his time.