Information: - The Kingdom of Hungary was a monarchy in Central Europe that existed from the Middle Ages into the twentieth century (10001946 with the exception of 19181920). The Principality of Hungary emerged as a Christian kingdom upon the coronation of the first king Stephen I at Esztergom in about the year 1000; his family (the Arpad dynasty) led the monarchy for 300years. By the 12th century, the kingdom became a European middle power within the Western world. - The King of Hungary was the head of state of the Kingdom of Hungary from 1000 (or 1001) to 1918. The style of title ""Apostolic King"" was confirmed by Pope Clement XIII in 1758 and used afterwards by all the Kings of Hungary, so after this date the kings are referred to as "Apostolic King of Hungary". - A head of state (or chief of state) is the public persona that officially represents the national unity and legitimacy of a sovereign state. In developing the current Constitution of France (1958), former French president Charles de Gaulle said the head of state should embody "the spirit of the nation" (""). In some countries, typically those with parliamentary governments, the head of state is a ceremonial figurehead that does not actually guide day-to-day government activities and may not even be empowered to exercise any kind of political authority (e.g., Queen Elizabeth II in the United Kingdom). In other countries, the head of state is also the head of government, such as in the U.S., where the president is both a public figurehead and the actual highest ranking political leader who, in practice, oversees the executive branch. - Mary , also known as Maria ( 1371 -- 17 May 1395 ) , was Queen regnant of Hungary and Croatia between 1382 and 1385 , and from 1386 until her death . She was the daughter of Louis the Great , King of Hungary and Poland , and his wife , Elizabeth of Bosnia . Mary 's marriage to Sigismund of Luxembourg , a member of the imperial Luxembourg dynasty , was already decided before her first birthday . A delegation of Polish prelates and lords confirmed her right to succeed her father in Poland in 1379 . Mary was crowned '' king '' of Hungary on 17 September 1382 , seven days after Louis I 's death . Her mother , who assumed regency , absolved the Polish noblemen from their oath of loyalty to Mary in favor of Mary 's younger sister , Hedwig , in early 1383 . The idea of a female monarch remained unpopular among the Hungarian noblemen , the majority of whom regarded Mary 's distant cousin , Charles III of Naples , the lawful king . To strengthen Mary 's position , the queen mother wanted to marry her to Louis , the younger brother of Charles VI of France . Their engagement was announced in May 1385 . Charles III of Naples landed in Dalmatia in September 1385 . Sigismund of Luxemburg invaded Upper Hungary ( now Slovakia ) , forcing the queen mother to give Mary in marriage to him in October . However , they could not prevent Charles from entering Buda . After Mary renounced the throne , Charles was crowned king on 31 December 1385 , but he was murdered at the instigation of Mary 's mother in February 1386 . Mary was restored , but the murdered king 's supporters captured her and her mother on 25 July . Queen Elizabeth was murdered in January 1387 , but Mary was released on 4 June 1387 . Mary officially remained the co-ruler with Sigismund , who had meanwhile been crowned king , but her influence on the government was nominal . - A queen consort is the wife of a reigning king (or an empress consort in the case of an emperor). In Brunei, the wife of the Sultan is known as a "Raja Isteri" with prefix "Pengiran Anak", equivalent with queen consort in English, as were the consorts of tsars when Bulgaria was still a monarchy. A queen consort usually shares her husband's social rank and status. She holds the feminine equivalent of the king's monarchical titles, but historically, she does not share the king's political and military powers. A queen regnant is a queen in her own right with all the powers of a monarch, who (usually) has become queen by inheriting the throne upon the death of the previous monarch. - Elizabeth of Bosnia ( January 1387) was queen consort and later regent of Hungary and Croatia, as well as queen consort of Poland. Daughter of Ban StephenII of Bosnia, Elizabeth married King LouisI of Hungary in 1353. In 1370, she gave birth to a long-anticipated heir, Catherine, and became Queen of Poland when Louis succeeded his uncle, CasimirIII. The royal couple had two more daughters, Mary and Hedwig, but Catherine died in 1378. Initially a powerless consort with no substantial influence, Elizabeth then started surrounding herself with noblemen loyal to her, led by her favourite, NicholasI Garai. When Louis died in 1382, Mary ascended to the throne of Hungary with Elizabeth as regent. Unable to preserve the personal union of Hungary and Poland, the queen dowager secured the Polish throne for her youngest daughter, Hedwig. What is the relationship between 'mary' and 'louis i of hungary'?
father