CULTO POPULAR. — I. was a religious of outstanding holiness of life, guided by rigorous asceticism with strong expressions of lofty and fervent mysticism, evident in his writings. Considered a saint or "blessed" in the technical sense of the word by historians and the people, who venerated him with acts of worship, his name was included in the Franciscan Martyrology. Buried in the church of the Clarisses at Montecristo near Todi, in 1433 his remains were transferred to the crypt of St Fortunato, where in 1596 Bishop Angelo Cesi reinterred them in a more honoured tomb, adorned with a fine inscription.
However, I.'s cult has not yet been confirmed by the Church, despite attempts made in this direction at Todi by the Municipal Council in 1628 and by the Chapter of the cathedral in 1676. In 1868 and 1869 the Postulation of the Friars Minor reopened the cause and gathered documents proving this cult rendered from time immemorial, which was also manifested in iconography with some miniatures, with his effigy on the tomb and another nearby together with other saints, and especially with the famous 16th-century fresco in the cathedral of Prato. Certain attitudes of I. towards Boniface VIII and the noted poetic intemperances regarding the same Pontiff seem to oppose the definitive confirmation.