This writing sample highlights the historiographical contributions of the DPhil, illuminating a new site history for San Pietro ad Vaticano. A small section of the initial site description has been removed, as this material is not essential to the primary argument of the chapter and becomes repetitive. This chapter is positioned alongside two other case study sites: Santi Giovanni e Paolo and San Clemente. Owing to the success of this chapter and the overall results of the case study, the other two case studies were structured to follow a similar format, providing both a detailed archaeological overview and an analysis of textual sources, resulting in a ʻsocial historyʼ of the area. In this context, social history encompasses the social structures, cultural practices, and everyday lives of people in the past, including their interactions, relationships, and how they were affected by social, economic, religious, and political changes. The chapter illustrates the type of research I intend to undertake in my postdoctoral project. A concise summary of this chapter will be published in The Cult of Saints in Late Antiquity, and it is the type of chapter I envision for each chapter of the monograph. This work has received ringing endorsements from Ine Jacobs, Bryan Ward-Perkins, and Jas Elsner. Please note that all references have been removed from the writing sample, but are available upon request.