Wikipedia
Viventiolus
Saint Viventiolus (460 – July 12, 524) (also known as Juventiole) was the Archbishop of Lyon (ancient Lugdunum) 514-523. Later canonized, his Feast Day is July 12.
He was also the brother of St. Rusticus, Archbishop of Lyon. Before becoming archbishop. Viventiolus was a monk of St. Oyend (St. Claude), on Jura. He is also the author of a book, Vie des pères du Jura (Life of the Jura Fathers), which described the beginnings of monasticism in that region.