h St. Marc, Histoire de l’Italie.
[i] S. Astley Dunham, Europe in the Middle Ages.
[j] Guglielmus Apuliensis, Rerum in Apulia, Campania, Calabria et Sicilia libri.
[k] Anna Comnena, Alexias.
[l] E. Gibbon, The Decline and Fall of the Roman Empire.
[m] Hugo Falcandus, Historia Sicula, in Muratori’s “Rerum Italicarum Scriptores,” vol. VII.
Chapter IV. The Thirteenth Century
[b] J. C. L. S. de Sismondi, op. cit.
[c] H. E. Napier, op. cit.
[d] Lorenzo Pignotti, The History of Tuscany.