This volume is the result of a collaborative research project between the volume’s editor, Roald Dijkstra, and Dr. Dorine van Espelo entitled “Popes and expressions of Roman power: Anchoring religious politics in periods of change (200-800 CE)” and a subsequent Ph.D. masterclass entitled “Peter, Popes, and Politics: Expressions of power in the late antique and early mediaeval world.” For this volume, Dijkstra assembled a group of accomplished scholars to examine St. Peter as an anchor in the early Christian and late antique world, and the various authors’ mastery of their equally varied topics is on display.