Anna of Cilli and her daughter Hedwig Jagiellon were 15th-century figures in which European country's royal family?
Anna of Cilli Anna of Cilli or Anne of Celje (  1381 – 21 May 1416) was Queen consort of Poland (1402–1416). She was the second wife of Jogaila (Władysław II Jagiełło), King of Poland and Supreme Duke of Lithuania (reigned 1387–1434). Their marriage was politically motivated to strengthen Jogaila's ties with the Piast dynasty and his claims to the Polish throne. Their marriage was rather distant and during fourteen years Anna bore only one daughter, Hedwig Jagiellon, who died without issue.
Joanna of Castile Joanna (6 November 1479 – 12 April 1555), called the Mad (Spanish: "Juana la Loca" ), was queen of Castile from 1504 and of Aragon from 1516. From the union of these two crowns modern Spain evolved. Joanna married Philip the Handsome on 20 October 1496. Philip was crowned King of Castile in 1506, initiating the rule of the Habsburgs in Spain. After Philip's death that same year, Joanna was deemed mentally ill and was confined to a nunnery for the rest of her life. Though she remained the legal queen of Castile throughout this time, her father, Ferdinand II of Aragon, was regent until his death, when she inherited his kingdom as well. From 1516, her son, Charles I, ruled as king, while she nominally remained co-monarch.