Today, June 25, is the memorial of Saint Prosper of Reggio.
Little is known about Prosper. He was an exceptional student who gravitated towards the writings of St. Augustine of Hippo.
Known for his holiness in life, Prosper moved from Aquitaine to Provence and settled near Marseilles, an area plagued with heresies. He worked to reverse the damage done by these heresies by teaching the people.
Thus, he became famous for converting heretics, sometimes leading pilgrimages to Rome, Italy so heretics could hear the truth straight from the Pope.
He was the secretary to Pope St. Leo the Great in 440. In that capacity, Prosper fought against semi-Pelagianism.
He died of natural causes around 460-466.