Casimir III of Poland died on 5 November 1370. Louis arrived after his uncle's funeral and ordered the erection of a splendid Gothic marble monument to the deceased king. He was crowned king of Poland in the Cracow Cathedral on 17 November. Casimir III had willed his patrimony – including the duchies of Sieradz, Łęczyca and Dobrzyń – to his grandson, Casimir IV, Duke of Pomerania. However, the Polish prelates and lords were opposed to the disintegration of Poland and Casimir III's testament was declared void. Louis visited Gniezno and made his Polish mother, Elizabeth, regent before returning to Hungary in December. His uncle's two surviving daughters (Anna and Jadwiga) accompanied him, and the Polish Crown Jewels were transferred to Buda, which raised discontent among Louis's new subjects. Louis's wife gave birth to a daughter, Catherine, in 1370, seventeen years after their marriage; a second daughter, Mary, was born in 1371. Thereafter Louis's made several attempts to safeguard his daughters' right to succeed him.