Memories of Colonisation in Medieval and Modern Castile: Rereading and Refashioning al-Andalus traces the evolving memory of a dominant al-Andalus in medieval Castilian and, later, modern Spanish literature. It presents a series of close readings of neomedievalist literary works that look back to the socioeconomic apogee of al-Andalus, the tenth-century Umayyad Caliphate of Cordoba, but were written centuries later, from the thirteenth to the nineteenth century. These works rewrite what has become known as the story of the siete infantes de Lara, although it is their Andalusi half-brother, Mudarra, who takes centre stage from the early modern period on. In its earliest form, it is a story of a weak, conflictual county of Castile, dependent socioeconomically and morally upon Andalusi intervention. Memories of Colonisation asks why Mudarra and the infantes continue to reappear in medieval chronicles, from the Estoria de España to lesser-known regional historiography, early modern ballads, comedias, and nineteenth-century Romantic poetry and prose. By examining how each of these texts remembers tenth-century Iberia’s fluid geographical and interracial boundaries and Castilian disempowerment, it explores how they support or challenge dominant contemporary discourses of collective identity, race, and nation; from the neogothic aspirations of thirteenth-century Castile to the antisemitism of fifteenth-century Toledo, expansion in the Mediterranean, the Islamophobia of the morisco expulsion, and the partisan manipulation of al-Andalus under nineteenth century liberalism. It also examines how each text exposes the task of reconstructing historical memory in the present and thereby challenges the notion of a stable, incontestable past for Castile and Spain.