or Conrad junior, son of Conrad IV. was acknowledged emperor by the Gibelines, who received him in triumph at Rome; but Pope Alexander IV. had published a crusade against this orphan; and Urban VII. his successor, gave the empire to Charles of Anjou, brother to Louis IX., king of France; and the unfortunate youth, though powerfully supported even by the Turks, lost a battle, in which he was taken prisoner, and was beheaded, by order of his base opponent, publicly at Naples in 1229, in the 18th year of his age. In him ended the race of the dukes of Swabia, which had produced several kings and emperors.