Leggenda di Messer Gianni di Procida
The Leggenda di Messer Gianni di Procida ("Legend of Mister John of Procida") is a short medieval Tuscan history of the Sicilian Vespers, synoptic with another early Tuscan account, the Liber Jani de Procida et Palialoco. Both texts focus on the conspiratorial role played by John of Procida, who is cast as a villain. A contemporaneous Sicilian writing, Lu rebellamentu di Sichilia, portrays John as a hero. Both Tuscan versions are later than the Sicilian, but may share the Reballamentu as a source. Conversely, all three may derive from an earlier, now lost source. All three agree on the centrality of John of Procida in the Vespers.
The Leggenda was probably written by a Guelph of Modena. Sicilian folklorist Giuseppe Pitrè first suggested that the Leggenda may have influenced the Florentine Nuova Cronica of Giovanni Villani, but a critical study by German historian Otto Hartwig soon dismissed this. The Leggenda is conserved in a Modenese manuscript. It was published by Lodovico Antonio Muratori in his Raccolta degli storici Italiani, XXXIV.
- Deno John Geanakoplos (1959), Emperor Michael Palaeologus and the West, 1258–1282: A Study in Byzantine–Latin Relations (Cambridge, Massachusetts: Harvard University Press), 351.
- Steven Runciman (1958), The Sicilian Vespers: A History of the Mediterranean World in the Later Thirteenth Century (Cambridge: Cambridge University Press, ISBN 0-521-43774-1), 290.
- Marta VanLandingham (2002), Transforming the State: King, Court and Political Culture in the Realms of Aragon (1213–1387) (BRILL, ISBN 90-04-12743-7), 47.
- Otto Hartwig (1871), "Giovanni Villani und die Leggenda di Messer Gianni di Procida," Historische Zeitschrift, 23, 233–71.
- Vincenzo di Giovanni (1871), Filologia e letteratura siciliana: studii (Palermo: L. P. Lauriel), 52, who quotes its prologue.