Rome and the invention of the papacy. The Liber pontificalis. By Rosamond McKitterick. (The James Lydon Lectures in Medieval History and Culture.) Pp. xviii + 271 incl. 2 maps and 2 tables. Cambridge–New York: Cambridge University Press, 2020. £29.99. 978 1 108 83682 1 - Squatriti, Paolo (The journal of ecclesiastical history, 2023)