Nor was Vladislav less successful in rousing the enthusiasm of his subjects in favour of another war, which had as little connection as the Italian expedition had had with the welfare of Bohemia. Queen Geysa, of Hungary, appealed to Vladislav in 1164 to help her young son in his struggle against a pretender to the Hungarian throne. Again Vladislav promised his help, and again the constitutional protest against his promise produced an explanation which served to show the deference of the king to the laws, while its complete success proved his personal popularity in the country. This campaign gave additional proof of the king’s military reputation; for the Emperor of Constantinople, who had invaded Hungary on behalf of the rebels, was eager to make a special peace with his Bohemian opponent; and when he failed to effect this purpose, he speedily returned to his own country and accepted the proposals of Vladislav about the terms of his peace with Queen Geysa. The reign of Vladislav stands out strangely in the middle of the disorderly twelfth century. We see there a king suppressing disorder without suppressing freedom; armed insurrection by selfish intriguers, changing as if by magic into constitutional opposition on behalf of most important liberties; and all these gains apparently connected with an increase in military glory and national prestige, such as might well dazzle even men of some sagacity and foresight. But the glory, and, what was of far more importance, the peace of Bohemia, were of short duration. The death of Bishop Daniel broke the chief link between Vladislav and Barbarossa. The bishop had remained with the Emperor during his Italian campaign; his counsels had always been welcome, and his influence had, no doubt, been a strong force in securing Bohemia to the Imperial cause. Nor did his death produce a merely negative effect on the relations between Bohemia and the Empire. It brought into play another influence which was exerted on the opposite side.