made the Hungarian nobility and clergy, who were previously uninterested in those regions, jealous and suspicious. Some nobles claimed these lands, but the Order refused to share them, ignoring the demands of the local bishop. After the Fifth Crusade, King Andrew returned to Hungary and found his kingdom full of grudge because of the expenses and losses of the failed military campaign. When the nobles demanded that he cancel the concessions made to the Knights, he concluded that they had exceeded their task and that the agreement should be revised, but did not revert the concessions. However, Prince Béla, heir to the throne, was allied with the nobility. In 1224, the Teutonic Knights, seeing that they would have problems when the Prince inherited the Kingdom, petitioned Pope Honorius III to be placed directly under the authority of the Papal See, rather than that of the King of Hungary. This was a grave mistake, as King Andrew, angered and alarmed at their growing power, responded by expelling the Teutonic Knights in 1225, although he allowed the ethnically German commoners and peasants settled here by the Order and who became part of the larger group of the Transylvanian Saxons, to remain. Lacking the military organization and experience of the Teutonic Knights, the Hungarians did not replace them with adequate defenders which had prevented the attacking Cumans. Soon, the steppe warriors would be a threat again. Prussia In 1226, Konrad I, Duke of Masovia in north-eastern Poland, appealed to the Knights to defend his borders and subdue the pagan Baltic Old Prussians, allowing the Teutonic Knights use of Chełmno Land as a base for their campaign. This being a time of widespread crusading fervor throughout Western Europe, Hermann von Salza considered Prussia a good training ground for his knights for the wars against the Muslims in Outremer. With the Golden Bull of Rimini, Emperor Frederick II bestowed on the Order a special imperial privilege for the conquest and possession of Prussia, including Chełmno Land, with nominal papal sovereignty. In 1235 the Teutonic Knights assimilated the smaller Order of Dobrzyń, which had been established earlier by Christian, the first Bishop of Prussia. The conquest of Prussia was accomplished with much bloodshed over more than fifty years, during which native Prussians who remained unbaptised were subjugated, killed, or exiled. Fighting between the Knights and the Prussians was ferocious; chronicles of the Order state the Prussians