Charles received French education and was literate and fluent in five languages: Latin, Czech, German, French, and Italian. Italy and Moravia In 1331, he gained some experience of warfare in Italy with his father. At the beginning of 1333, Charles went to Lucca (Tuscany) to consolidate his rule there. In an effort to defend the city, Charles founded the nearby fortress and the town of Montecarlo (Charles' Mountain). From 1333, he administered the lands of the Bohemian Crown due to his father's frequent absence and deteriorating eyesight. In 1334, Charles was named Margrave of Moravia, the traditional title for heirs to the throne. Two years later, he assumed the government of Tyrol on behalf of his brother, John Henry, and was soon actively involved in a struggle for the possession of this county. King of the Romans On 11 July 1346, in consequence of an alliance between his father and Pope Clement VI, relentless enemy of the emperor Louis IV, Charles was elected as Roman king in opposition to Louis by some of the prince-electors at Rhens. As he had previously promised to be subservient to Clement, he made extensive concessions to the pope in 1347. Confirming the papacy in the possession of vast territories, he promised to annul the acts of Louis against Clement, to take no part in Italian affairs, and to defend and protect the church. Charles IV was in a very weak position in Germany. Owing to the terms of his election, he was derisively referred to as a "Priests' King" (Pfaffenkönig). Many bishops and nearly all of the Imperial cities remained loyal to Louis the Bavarian. Worse still, Charles backed the wrong side in the Hundred Years' War, losing his father and many of his best knights at the Battle of Crécy in August 1346, with Charles himself escaping from the field wounded. Civil war in Germany was prevented, however, when Louis IV died on 11 October 1347, after suffering a stroke during a bear hunt. In January 1349, House of Wittelsbach partisans attempted to secure the election of Günther von Schwarzburg as king, but he attracted few supporters and was defeated by Charles at the siege of Eltville in May. Thereafter, Charles faced no direct threat to his claim to the Imperial throne. Charles initially worked to secure his power base. Bohemia had remained untouched by the plague. Prague became his capital, and he