Edward, firstborn son of the King of England, Prince of Wales and of Guyenne, Duke of Cornwall and Earl of Chester, to the noble and powerful prince, Don Enrique, Count of Trastámara. You should be aware that in the last few days the most high and most powerful prince Don Pedro, King of Castile and León, our very dear and most beloved kinsman, has arrived in Guyenne, where we were, and gave us to understand that when his father King Alfonso died, all the people of the kingdoms of Castile and León peacefully accepted him as their king and lord. You were indeed one of those who accordingly obeyed him and spent a long time in doing so. He says that thereafter, about a year ago, you entered his kingdom with foreign troops and have occupied it by force, calling yourself King of Castile, taking his treasure and revenue, and saying that you will defend it against him and against all who wish to assist him. We are quite amazed that a man as noble as you, indeed a king's son, should commit so shameful an act against your lord and king.

King Pedro duly informed the King of England, my lord and father, of these matters and requested his help in recovering his kingdom and suzerainty, on the grounds of the great family ties which the royal houses of England and Castile hold in common, and of the treaties and friendly relationship which he had established with my lord the king and with me. The king, my lord and father, on seeing that King Pedro, his kinsman, was asking him for something that was just and reasonable, indeed for precisely the kind of help which every king should give, was pleased to give such assistance.