 Without delay, messengers were sent out by the Castilians to the main fortresses across Navarre demanding that they follow suit.Most of them submitted, except for Amaiur (Baztan), Estella-Lizarra, Tudela, and Saint-Jean-Pied-de-Port.The authorities of Pamplona were required to vow loyalty to Ferdinand, but they alleged that they could not as they had pledged allegiance to John III, their natural lord, and he was alive.