==Notes====References==* Duffy, Eamon, "Saints and Sinners: A History of the Popes", Yale University Press (1997)* Mann, Horace K., "The Lives of the Popes in the Early Middle Ages, Vol.
*Duffy, Eamon, Saints and Sinners: A History of the Popes, Yale University Press (1997)*Mann, Horace K., The Lives of the Popes in the Early Middle Ages, Vol.