When the treaty had been concluded as we have related in brief, it was also decided in that place that Prince Enrique should be called the Prince of Asturias and that his wife, Lady Catalina, be called Princess, and that on a certain day she should be brought to Castile and duly handed over in that kingdom. The king immediately determined how this should be, sending, prelates, ladies and knights, as befitted her honour. They came to a town called Fuenterrabía, which is in Guipúzcoa in the land of Vizcaya. Knights of the Duke of Lancaster brought the princess there, delivering her to those honourable people that the king had appointed to collect her. They received a certain sum in gold, and the hostages who were to be handed over. Then the two groups took their leave of each other.

The King of Castile awaited his daughter-in-law, who was a girl of fourteen, in the city of Palencia, in order to solemnise the betrothal ceremony there. When she arrived, the king received her with very great honour. A few days later, in the cathedral of that city, they were betrothed as is customary, with most pleasurable jousts, tourneys and other entertainments. The king gave jewels to some of the duke's men who had come there, and then they departed.

The king left and went to Tordesillas. There it was decided that Princess Constanza, his cousin, the wife of the duke, should come to Castile to see the king. He ordered that she be received by great lords and prelates, offering her much courtesy and honour wherever she went. When she arrived, the king welcomed her most honourably, and she stayed there for several days. The king gave her some of his jewels and also the town of Huete to hold during her lifetime, which he ordered to be handed over to her at once. The duke sent to the king, via his wife, a very richly worked and beautiful crown of gold, saying that he had had it made to crown himself in the kingdoms of Castile, but since they had agreed and made peace, it was fitting that King Juan should wear it. He also sent the king a very valuable gold belt. The king sent him horses, swift jennets, very handsome mules and other things.