The Estoria de España ("History of Spain"), also known in the 1906 edition of Ramón Menéndez Pidal as the Primera Crónica General ("First General Chronicle"), is a history book written on the initiative of Alfonso X of Castile "El Sabio" ("the Wise"), who was actively involved in the editing. It is believed to be the first extended history of Spain in Old Spanish, a West Iberian Romance language that forms part of the lineage from Vulgar Latin to modern Spanish. Many prior works were consulted in constructing this history. The book narrates a history beginning in Biblical and legendary origins and continues through the history of Castile under Fernando III of Castile. In the style of chronicles of its time, it begins by retelling the stories of remote origins found in the Bible. From the time of Moses onward, the mix begins to include Greek sources on ancient history. However, as the story continues, the details become increasingly detailed, especially from the Germanic invasions to the time of Alfonso's father Fernando III. The work is divided into four large parts. The first includes a history of Ancient Rome: the medieval European monarchs considered themselves heirs to the Roman Empire. The second tells the history of the barbarian and Gothic kings, treated as antecedents within the Iberian Peninsula. The third is a history of the Kingdom of Asturias from which the Reconquista (the Christian reconquest of Iberia from Muslim rule) began. The fourth and final part is a history of the Kingdoms of León and Castile. Source: Wikipedia (en)