Events during the year 1113 in Italy.

• Republic of Florence conquers the city of Montecascioli.

• Andrew of Gaeta
• Gregory of San Grisogono

• Bloch, Herbert (1986). Monte Cassino in the Middle Ages. Volume I (Parts I–III). Cambridge, MA: Harvard University Press.

• Falkenhausen, Vera von (1989). “Dell’Aquila, Riccardo”. Dizionario Biografico degli Italiani. Vol. 37. Rome: Istituto dell’Enciclopedia Italian.
• Horst, Uwe (1980). Die Kanonessammlung Polycarpus des Gregor von S. Grisogono (in German). München: Monumenta Germaniae Historica. ISBN 978-3-921575-98-7. OCLC 185920948.
• Hüls, Rudolf (1977). Kardinäle, Klerus und Kirchen Roms: 1049–1130 (in German). Bibliothek des Deutschen Historischen Instituts in Rom. ISBN 978-3-484-80071-7.

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