The death of Louis found Bohemia in a state of great disorder, almost of anarchy. The two last kings had mainly resided in Hungary, and in spite of the temporary agreement obtained at the diet of St Wenceslas, the Bohemians had not succeeded in establishing a strong indigenous government which might have taken the place of the absentee monarchs. Archduke Ferdinand of Austria--afterwards the emperor Ferdinand I.--laid claim to the Bohemian throne as husband of Anna, daughter of King Vladislav. King Sigismund of Poland, the dukes Louis and William of Bavaria, several other German princes, as well as several Bohemian noblemen, of whom Leo of Rozmital was the most important, were also candidates. The diet resolved to entrust the election to twenty-four of their members, chosen in equal number from the three estates. These electors, on the 23rd of October (1526), chose Ferdinand of Habsburg as their king. This date is memorable, as it marks the permanent accession of the Habsburg dynasty to the Bohemian throne, though the Austrian archdukes Rudolph and Albert had previously been rulers of Bohemia for short periods. Though Ferdinand fully shared that devotion to Rome which is traditional in the Habsburg dynasty, he showed great moderation in religious matters, particularly at the beginning of his reign. His principal object was to establish the hereditary right of his dynasty to the Bohemian throne, and this object he pursued with characteristic obstinacy. When a great fire broke out at Prague in 1541, which destroyed all the state documents, Ferdinand obtained the consent of the estates to the substitution of a charter stating that he had been recognized as king in consequence of the hereditary rights of his wife Anna, in the place of the former one, which had stated that he had become king by election. This caused great dissatisfaction and was one of the principal causes of the troubles that broke out shortly afterwards. Ferdinand had in 1531, mainly through the influence of his brother the emperor Charles V., been elected king of the Romans and heir to the Empire. He henceforth took a large part in the politics of Germany, particularly after he had in 1547 concluded a treaty of peace with Turkey, which assured the safety of the eastern frontiers of his dominions. Charles V. about the same time concluded his war with France, and the brothers determined to adopt a firmer policy towards the Protestants of Germany, whose power had recently greatly increased. The latter had, about the time of the recognition of Ferdinand as king of the Romans, and partly in consequence of that event, formed at Schmalkalden a league, of which John Frederick, elector of Saxony, and Philip, landgrave of Hesse, were the leaders. War broke out in Germany in the summer of 1546, and Charles relied on the aid of his brother, while the German Protestants on the other hand appealed to their Bohemian co-religionists for aid.