John Gonzales de Castrillo was born at Sahagun, Leon Spain. He was educated by the Benedictine monks of Fagondez monastery there and when twenty, received a canonry from the bishop of Burgos, though he already had several benefices. He was ordained in 1445; concerned about the evil of pluralism, he resigned all his benefices except that of St. Agatha in Burgos. He spent the next four years studying at the University of Salamanca and then began to preach. In the next decade he achieved a great …