 The Aragonese were the first Christians to adopt those strategies and fight like those groups of Saracens known as Almogavars, which eventually led to them being known by the same name.Even though there were no contemporary chronicles of the events of the 11th or 12th centuries, the first time that any Christian Almogavars are mentioned is in a testimony by Jerónimo Zurita in his "Annals of Aragón", which places the Almogavars in the time of Alfonso I of Aragon reinforcing the fortress of El Castellar around 1105–1110 with visions of the conquest of Zaragoza