St. John of Sahagun was educated by the Benedictine monks of Leon, Spain. He was ordained a priest in 1445. He went to the University of Salamanca. He was a profound preacher and spoke out against pluralism. After undergoing a serious surgery John became an Augustinian monk. He had a reputation for reading men’s souls and performing miracles. He was not afraid to denounce evil in high places and for this he was martyred.