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.