In November 1370, Casimir's nephew and closest male relative, Louis of Anjou, was crowned king at Wawel. He ruled Poland, Hungary and Croatia in a personal union. Like his uncle, Louis I had no sons and persuaded his subjects to acknowledge the right of his daughters to succeed him in both Poland and Hungary by granting privileges. Upon his death and a two-year interregnum, his younger daughter Hedwig (in Poland known as Jadwiga) became the first female monarch of the Kingdom of Poland in 1384. However, she was stylised as "king" during her reign because the Polish law had no provision for a queen regnant, but did not specify that the monarch had to be male.