I: The Popes Under the Lombard Rule, Part 2, 657-795" (1903)* DeCormenin, Louis Marie; Gihon, James L., "A Complete History of the Popes of Rome, from Saint Peter, the First Bishop to Pius the Ninth" (1857)==External links==
I: The Popes Under the Lombard Rule, Part 2, 657-795 (1903)*DeCormenin, Louis Marie; Gihon, James L., A Complete History of the Popes of Rome, from Saint Peter, the First Bishop to Pius the Ninth (1857)