 In November 1511 Ferdinand and his son-in-law King Henry VIII of England signed the Treaty of Westminster, pledging mutual aid between the two against Navarre and France ahead of the Spanish invasion of Navarre as of July 1512.After the fall of Granada in 1492, he had manoeuvred for years to take over the throne of the Basque kingdom, ruled by Queen Catherine of Navarre and King John III of Navarre, also lords of Béarn and other sizeable territories north of the Pyrenees and in Gascony.Ferdinand annexed Navarre first to the Crown of Aragon, but later, under the pressure of Castilian noblemen, to the Crown of Castile.