Veil of Veronica
Leo Dupont was a religious man from a noble family who had moved to Tours. In 1849 he had started the nightly Eucharistic Adoration movement in Tours, from where it spread within France. He later came to be known as the "Holy Man of Tours". Upon hearing of Sister Marie of St Peter’s reported visions, he started to burn a vigil lamp continuously before a picture of the Holy Face of Jesus, at that time an image based on the Veil of Veronica.