He was ordained a priest and was made archbishop of Vienne in 957.
[2] A supporter of monastic revival, he was deemed a protector of the Church in lieu of royal interference.
Saint Theobald of Vienne's grave is in Saint Maurice Cathedral in Vienne and is said to be the site of miracles, and was once a pilgrimage site.
[5] He is venerated as a saint in the Eastern Orthodox Church and Roman Catholic church, with a feast day on 21 May.
[6] The cult of veneration for Theobald was approved by Pope Pius X on 9 December 1903.