Through his apostasy the Prince of Neuburg was in danger of losing his hereditary estates, his brothers endeavouring to dispossess him on the ground of the late duke's will, disinheriting any one of his heirs who should become a convert to Catholicism. He had accordingly implored aid from the King of Spain. Archduke Albert had urged Philip to render such assistance as a matter of justice, and the Emperor had naturally declared that the whole right as eldest son belonged, notwithstanding the will, to the Prince. With the young Neuburg accordingly under the able guidance of Maximilian, it was not likely that the grasp of the Spanish party upon these all- important territories would be really loosened. The Emperor still claimed the right to decide among the candidates and to hold the provinces under sequestration till the decision should be made--that was to say, until the Greek Kalends. The original attempt to do this through Archduke Leopold had been thwarted, as we have seen, by the prompt movements of Maurice sustained by the policy of Barneveld. The Advocate was resolved that the Emperor's name should not be mentioned either in the preamble or body of the treaty. And his course throughout the simulations, which were never negotiations, was perpetually baffled as much by the easiness and languor of his allies as the ingenuity of the enemy. He was reproached with the loss of Wesel, that Geneva of the Rhine, which would never be abandoned by Spain if it was not done forthwith. Let Spain guarantee the Treaty of Xanten, he said, and then she cannot come back. All else is illusion. Moreover, the Emperor had given positive orders that Wesel should not be given up. He was assured by Villeroy that France would never put on her harness for Aachen, that cradle of Protestantism. That was for the States-General to do, whom it so much more nearly concerned. The whole aim of Barneveld was not to destroy the Treaty of Xanten, but to enforce it in the only way in which it could be enforced, by the guarantee of Spain. So secured, it would be a barrier in the universal war of religion which he foresaw was soon to break out. But it was the resolve of Spain, instead of pledging herself to the treaty, to establish the legal control of the territory in the hand of the Emperor. Neuburg complained that Philip in writing to him did not give him the title of Duke of Julich and Cleve, although be had been placed in possession of those estates by the arms of Spain. Philip, referring to Archduke Albert for his opinion on this subject, was advised that, as the Emperor had not given Neuburg the investiture of the duchies, the King was quite right in refusing him the title. Even should the Treaty of Xanten be executed, neither he nor the Elector of Brandenburg would be anything but administrators until the question of right was decided by the Emperor.