The two daughters of Pedro had remained since their father's flight at Bordeaux.

The elder of these was now wedded to John of Gaunt, Edward's fourth son, whom he had created Duke of Lancaster on his previous marriage with Blanche, a daughter of Henry of Lancaster and the heiress of that house, while the younger was wedded to Edward's fifth son, the Earl of Cambridge.

Edward's aim was that of raising again the party of King Pedro and giving Henry of Trastamara work to do at home which would hinder his interposition in the war of Guienne.

It was with this view that John of Gaunt on his marriage took the title of king of Castille.

But no adherent of Pedro's cause stirred in Spain, and Henry replied to the challenge by sending a Spanish fleet to the Channel.