the initiative of Władysław I the Elbow-high (first-cousin of Maria's father), and the role of matchmaker was played by her brother Bolesław, then Scholastic of Kraków and Duke of Toszek. The wedding ceremony took place probably in Bytom, the homeland of the bride. After arriving to Hungary and in accordance with the almost century-old custom, Maria was crowned Queen of Hungary by Benedict Rád, Bishop of Veszprém in Székesfehérvár. This union was the external expression of the approximation between the Polish and Hungarian kingdoms, connected to the transition of the House of Anjou politics in close political relations with Poland. In addition, the Duchy of Bytom, now closely associated to the anti-Czech party, could get out of its feudal relationship with the Kingdom of Bohemia. Charles I Robert also strengthened his position as competitor for the Hungarian throne against Otto III of Bavaria thanks to his marriage, because (as was assumed by historians), his wife was closely related to the House of Arpad: Maria's mother Helena was granddaughter of King Bela IV of Hungary through her mother. The position of Maria as Queen of Hungary also paved the way for the subsequent career in the Hungarian church of his brothers Bolesław (later Archbishop of Esztergom) and Mieszko (later Bishop of Nitra and Veszprém). Little is known about the role of Maria in the Hungarian royal court. There are only two documents issued by it. The first, from 1312, has survived until today together with the stamp. The content of the second, from 9 April 1313, is known as the confirmation of the Chapter in Székesfehérvár. The obverse of the seal's image of Maria showed the Queen sitting on a throne with floral envelope and the letter M and A in both sides, while positioned on the back of the customary double cross and the letters Angevin RI and A between her shoulders. The letters on both sides of the seal consists of the name of the queen. Maria died on 15 December 1317 in Temesvár (now Timișoara, Romania) and was buried in the Royal vault of Székesfehérvár in the Basilica of the Virgin Mary, according to the reports of Jan Długosz. The Polish chronicler confirms this facts with the Hungarian sources, but they provide three different dates of Maria's death: 1315, 1316 or 1317. The third date is now accepted as the definitive one thanks to a document issued by