Sts. Nabor and Felix suffered martyrdom at Milan under Maximian Herculeus, about the year 304. St. Ambrose honored their memory and from Milan devotion to them spread throughout the Universal Church.
(Source: The New Roman Missal, Rev. F. X. Lasance)
Born at Florence at the end of the Tenth Century, John Gualbert was trained in the school of St. Benedict. Raised to the papacy he exalted that office and the position of the hierarchy which had been degraded by the imperial power. He stamped out simony and brought back order and peace to the land of Tuscany. At Valombrosa he founded a monastery, whence came many saints and which still flourishes. On one occasion meeting the murderer of his brother, he pardoned him in the name of the Redeemer. For this act he received a singular recognition from Our Crucified Lord. He died on July 12, 1073, and was canonized in 1193.