An expanded presentation was given at the Ancient History WIP Seminar. A new version is presented here, along with an outline of planned future research. This new project (ETSR) will yield ten database entries for the ‘Cult of Saints in Late Antiquity’ (CSLA) and two academic articles, building towards a scholarly monograph proposal for OUP. Foundational to the study of Late Antique Rome are the records preserved in early Christian basilicas. These vital historical sources have preserved a wide variety of textual and archival documentation, as well as art and architecture (Krautheimer, 1937). However, the associations and site histories of these spaces were initially conjectured by scholars such as Giovanni Battista de Rossi, Antonio Bosio, Pompeo Ugonio, and Giacomo Grimaldi, long before their eventual excavation in the nineteenth century (Cecalupo, 2025). Such texts were used similarly to Homer during the discovery of Troy by Schliemann, serving as descriptive 'maps’ of sorts (Allen, 2023).