Baring-Gould’s sources: This saint is often confounded with S. Prosper of Riez, and also with S. Prosper, bishop of Riez. Prosper of Aquitain, or of Riez, was the layman secretary to S. Leo. The bishop of his name was bishop of Riez before S. Maximinus. Riez and Reggio are both Regium-Lepidum in Latin, and thence the confusion. In their lives, the same confusion reigns. They are all three made secretaries to Pope S. Leo, and all theological writers. There was also a S. Prosper, Bishop of Orleans, at the same period, kS-. Tygris.

…who subscribed the decrees of the councils of Vaison and Carpentras, about A.D. 640. There is little reliable ancient information in the life of Prosper of Reggio.] S. Prosper, bishop of Reggio, is said to have sold all his possessions on hearing read in the Gospel the words of our Lord, “ If thou wilt be perfect, go, sell all that thou hast, and give to the poor, and come and follow me.” He administered his diocese with great care for the poor, and for the spread of true religion. After having occupied the episcopal throne for twenty-two years, he died on June 25th, about the year 466, and was buried in the church of S. Apollinaris, which he had erected outside the walls of Reggio.