In 587, Gregory began writing the Book of the Glories of the Martyrs (), which deals "almost exclusively with the miracles wrought in Gaul by the martyrs of the Roman persecutions". But it also tells the story of one Theodore who made a pilgrimage to India and reported the existence of a large monastery where the body of Thomas the Apostle was first interred and where miracles took place.
In 587 Gregory began writing the Book of the Glories of the Martyrs (), which deals "almost exclusively with the miracles wrought in Gaul by the martyrs of the Roman p,ersecutions". But it also tells the story of one Theodore who made a pilgrimage to India and reported the existence of a large monastery where the body of Thomas the Apostle was first interred and where miracles took place.