 On hearing the news of the Navarrese army's approach, Estella-Lizarra and the fortress of Monjardin next to it revolted against the occupiers.On 24October 1512, the Duke of Alba reached Pamplona, followed by Navarrese loyalist forces, who laid siege to the capital.In Estella-Lizarra, the rebels led by John Ramirez de Baquedano and Jaime Velaz de Medrano were soon opposed by the forces of Pedro de Beaumont, supported by the Castilians the Duke of Nájera and the Marquis of Comares.