To avoid marriage, she set a condition that her future spouse must complete a circuit along the castle's walls on horseback in armor.
In the evening, when the knight was dining, he started talking about his travel in a very interesting way, and most of the castle servants crowded into the chamber.
Kunegunda, informed by her maid, wanted to hear the story but the princess was too proud to sit at the table with servants.
She also could not call the tired newcomer to her room in the evening, so Kunegunda wore a maid's dress and hid in the corner, where she stayed unnoticed.
During the night, the desperate princess sent the maid to the knight with the message that she rescinded the obligation to ride around the walls and would marry him.
However, contrary to Kunegunda's expectations, the knight said that he had not come to get married, but to complete the circuit along the castle's walls and so restrain her cruelty, which had caused the death of many valiant men who had had the loftiest goals and should be remembered as heroes.
[1] The third end tells about Kungunda's marriage with German knight Elwardt von Ehrbach, who once traveled with her wearing servant clothes.