 Theobald II of Navarre had a Vice-Chancellor, according to letters dated 1259.In 1512, Ferdinand the Catholic, King of Aragon and son of John II of Aragon and Navarre, invaded the Kingdom of Navarre, beginning the Spanish conquest of Iberian Navarre, during the reign of Jean III d'Albret and Catherine de Foix-Béarn, and quickly conquered all of Upper Navarre and part of Lower Navarre.Jean III d'Albret tried to retake his kingdom, first in 1512, but failed despite French support, then again in 1516.