Pietro, an artist of the earliest epoch of the Roman school, who was taught painting and mosaic by Giotto, while he was employed at Rome; and it is believed that he assisted his master in the mosaic of the Naricella, or ship of St Peter, in the porch of the church of that saint. Lanzi describes him as an adept in both arts; and mentions with approbation his grand fresco of a Crucifixion at Assisi, still in tolerable preservation. Cavallini has another claim to notice, since, according to George Vertue, it is highly probable that he executed the mosaics and other ornaments of the tomb of Edward the Confessor in Westminster Abbey, by order of Henry III. The work, however, must have been executed by him in Rome, where he appears to have constantly resided. He died in 1344 at the age of 85.