In the battle that followed, Manfred defended himself gallantly, but, despite all his efforts, was worsted, and threw himself desperately into the thick of the fight, where he fell, covered with wounds. The bigoted victor refused him honorable burial, on the score of heresy, but the French soldiers, nobler-hearted than their leader, and touched by the beauty and valor of their unfortunate opponent, cast each of them a stone upon his body, which was thus buried under a mound which the natives still know as the "rock of roses." The wife and children of Manfred met with a pitiable fate. On learning of the sad death of her husband Helena sought safety in flight, with her daughter Beatrice and her three infant sons, Henry, Frederick, and Anselino; but she was betrayed to Charles, who threw her into a dungeon, in which she soon languished and died. Of her children, her daughter Beatrice was afterwards rescued by Peter of Aragon, who exchanged for her a son of Charles of Anjou, whom he held prisoner; but the three boys were given over to the cruellest fate. Immured in a narrow dungeon, and loaded with chains, they remained thus half-naked, ill-fed, and untaught for the period of thirty-one years. Not until 1297 were they released from their chains and allowed to be visited by a priest and a physician. Charles of Anjou, meanwhile, filled with the spirit of cruelty and ambition, sought to destroy every vestige of the Hohenstauffen rule in southern Italy, the scene of Frederick's long and lustrous reign. The death of Manfred had not extinguished all the princes of Frederick's house. There remained another, Conradin, son of Conrad IV., Duke of Swabia, a youthful prince to whom had descended some of the intellectual powers of his noted grand-sire. He had an inseparable friend, Frederick, son of the Margrave of Baden, of his own age, and like him enthusiastic and imaginative, their ardent fancies finding vent in song. One of Conradin's ballads is still extant. As the young prince grew older, the seclusion to which he was subjected by his guardian, Meinhard, Count von Goertz, became so irksome to him that he gladly accepted a proposal from the Italian Ghibellines to put himself at their head. In 1267 he set out, in company with Frederick, and with a following of some ten thousand men, and crossed the Alps to Lombardy, where he met with a warm welcome at Verona by the Ghibelline chiefs. Treachery accompanied him, however, in the presence of his guardian Meinhard and Louis of Bavaria, who persuaded him to part with his German possessions for a low price, and then deserted him, followed by the greater part of the Germans. Conradin was left with but three thousand men.