Albert the Magnanimous KG was King of Hungary and Croatia from 1437 until his death and member of the House of Habsburg. He was also King of Bohemia, elected King of Germany as Albert II, Duke of Luxembourg and, as Albert V, Archduke of Austria from 1404.
Albert was born in Vienna as the son of Albert IV, Duke of Austria, and Joanna Sophia of Bavaria.
He succeeded to the Duchy of Austria at the age of seven on his father's death in 1404. His uncle Duke William of Inner Austria, then head of the rivaling Leopoldinian line, served as regent for his nephew, followed by his brothers Leopold IV and Ernest the Iron in 1406. In 1422 Albert married Elisabeth of Luxemburg, the daughter and heiress of the King Sigismund of Hungary (later also Holy Roman Emperor and Bohemia), and his second wife, the Slovenian noblewoman Barbara of Celje. Besides Hungary, Albert's marriage brought him claims to several Slavic kingdoms and principalities as well.
When Sigismund died in 1437, Albert was crowned king of Hungary on 1 January 1438, and just as his predecessor did, he moved his court to the Hungarian Kingdom from where he later oversaw his other domains. Although crowned king of Bohemia six months after ascending to the Hungarian throne, he was unable to obtain possession of the country. He was engaged in warfare with the Bohemians and their Polish allies, when on 18 March 1438, he was chosen "King of the Romans" at Frankfurt, an honour which he does not appear to have sought. He was never crowned as Holy Roman Emperor.
Afterwards engaged in defending Hungary against the attacks of the Turks, he died on 27 October 1439 at Neszmély and was buried at Székesfehérvár. Albert was an energetic and warlike prince, whose short reign as a triple king gave great promise of usefulness for the Holy Roman Empire. Until its final dissolution in 1806 the House of Habsburg remained the ruling dynasty.
His royal style was:
Albert, by the grace of God elected King of the Romans, always August, King of Hungary, Dalmatia, Croatia, Rama, Serbia, Galicia, Lodomeria, Cumania and Bulgaria, elected King of Bohemia, duke of Austria, Styria, Carinthia and Carniola, margrave of Moravia, Lord of the Wendish March and Port Naon, Count of Habsburg, Tyrol, Ferrete and Kyburg, etc. Margrave of Burgau and landgrave of Alsace.