Traditio Patrum 1, - Scriptores Hispaniae is a collective work, consisting of about thirty papers focusing on the history of Late Antique and Medieval manuscript transmission of Iberian patristic texts. It opens up a new series entitled Traditio Patrum, focused on the textual transmission of the Early Church Fathers in the Western medieval world The TraPat series will follow a planned subdivision by geographical area, except for the volume dedicated to the Latin Ante-Nicene Fathers (and those devoted to Latin translations of the Greek Fathers) which will follow a chronological order. The classification system will conform to the Clavis Patrum Latinorum and the Clavis Patrum Graecorum. The goal of this editorial project is twofold: on the one hand to investigate the textual transmission of single authors and works, highlighting specific features and the many aspects that still need further investigation; on the other hand, to make it possible to verify if the textual transmission of Latin patristic texts may obey still identifiable constants, and which they can be (e.g. the literary genre, the personality of the author, a specific historical moment, a field of theological thought etc). In this respect, the geographical area of origin could be an interesting constant to be verified. For the volume dedicated to the Iberian Fathers, it seems to be possible to pinpoint some characteristic features, most notably the tendency to pseudoepigraphy and pseudo-attribution by the manuscript tradition. Each of these features creates a framework for further methodological reflections.