This island of Pfalz still contains the ruins of a castle, known as Pfalzgrafenstein. It belonged in medieval days to the Palatine Princes, and at the time our story opens one of these, named Hermann, having suspected his wife, the Princess Guba, of infidelity, had lately caused her to be incarcerated within it. Its governor, Count von Roth, was charged to watch the prisoner's movements carefully; but, being sure she was innocent, his measures with her were generally lenient, while his countess soon formed a deep friendship for the Princess. Thus it seemed to Guba that her captivity was not destined to be so terrible as she had anticipated, but she was soon disillusioned, as will appear presently. It should be explained that as yet the Princess had borne no children to her husband, whose heir-apparent was consequently his brother Ludwig; and this person naturally tried to prevent a reconciliation between the Palatine Prince and his wife, for should they be united again, Ludwig's hope to succeed his brother might be frustrated. So he was a frequent visitor to the Pfalzgrafenstein, constantly telling von Roth that he allowed the Princess too much liberty. Worse still, Ludwig sometimes remained at the island castle for a long time, and at these periods the prisoner underwent constant ill-treatment, which the Governor was powerless to alleviate. The people of the neighbourhood felt kindly toward Guba, but their sympathy was of little avail; and at length during one of Ludwig's visits to Pfalzgrafenstein it seemed as though he was about to triumph and effect a final separation between the Princess and Hermann. For it transpired one evening that Guba was not within the castle. A hue and cry was instantly raised, and the island was searched by Ludwig and von Roth. "I wager," said Ludwig, "that at this very moment Guba is with her paramour. Let my brother the Prince hear of this, and your life will answer for it. Often have I urged you to be stricter; you see now the result of your leniency." Von Roth protested that the Princess was taking the air alone; but while they argued the pair espied Guba, and it was as Ludwig had said--she was attended by a man. "The bird is snared," shouted Ludwig; and as he and von Roth ran toward the offending couple they separated instantly, the man making for a boat moored hard by. But ere he could reach it he was caught by his pursuers, and recognized for a certain young gallant of the district. He was dragged to the castle, where after a brief trial he was condemned to be hanged. He blanched on hearing the sentence, but faced his fate manfully, and when the rope was about his neck he declared loudly that Guba had always discouraged his addresses and was innocent of the sin wherewith she was charged.