The breach between the Crown and Parliament was not the only question with which Prussia was troubled at this time. The summer of 1863 was also marked by the attempt of Austria to take the solution of the German question into her own hands by initiating a scheme for reforming the Federal Constitution.

The Emperor Francis Joseph invited the Princes and the free cities of Germany to a conference at Frankfort to discuss the reorganisation of the Germanic Confederation. King William was inclined to accept this proposal, but Bismarck held other views; and a further invitation from the Emperor that the King should send the Crown Prince to the Congress of Princes, was also declined.

Nevertheless the Congress was held, and there was also held a sort of family gathering of what Bismarck would have designated “the Coburgers” at Coburg. Queen Victoria was there, and in August the Crown Princess joined her, quickly followed by the Crown Prince.

Lord Granville, who was a close observer of the complicated intrigues of the Congress, wrote to Lord Stanley of Alderley: “The Princess Royal is very Prussian on this Confederation question.”

The Crown Prince’s views on the subject were expressed in a letter which he sent to his wife’s uncle, Duke Ernest, early in September. From this letter it seems clear that, whereas at first he had been inclined to favour the Austrian move, he altered his views when Austria showed her hand by demanding from the Congress a simple vote of assent or dissent to her project of reform. He mentioned that he had asked the King for permission to be absent from the meetings of the Cabinet, and indeed he paid with his family a long visit to Italy.

From Italy the Crown Prince and Princess proceeded to England, and that, with visits to Brussels and Karlsruhe, took up the rest of the year.

It must not, however, be thought that during this absence from Germany the Crown Prince and Princess ceased to take an interest in politics; on the contrary, they followed with the closest attention, what was indeed a serious constitutional crisis in the autumn of 1863.

In October, after they had started for Italy, the Crown Prince wrote to Bismarck:

“I hope that, to use your own words, your efforts in the present difficult position of the constitutional life of our country may be successful, and may accomplish that which you yourself describe as the urgent and essential understanding with the national representatives. I am following the course of events with the deepest interest.”

The constitutional crisis turned on the rejection, by the Upper House and the Crown, of the Budget which had been adopted by the Lower House. The King, as advised by Bismarck, was for governing without a constitution, but the Crown Prince, with his strong predisposition in favour of the English constitutional system, which had by this time been developed by Queen Victoria, could not help regarding his father’s attitude as jeopardising the security of the Crown.