Upon succeeding Saint Sylvius as bishop of Toulouse, he completed the Basilica of St. Sernin, begun by his predecessor.
Stukeley conjectured that it belonged to Exuperius, the Bishop of Tholouse in 405 AD, who gave it to the Bouge church in Touraine, and that it only ended up in England after it was plundered as spoils of the Battle of Bouge in 1421.
Accardo owns one Stradivarius violin, the "Hart ex Francescatti" (1727) and had the "Firebird ex Saint-Exupéry" (1718).
In the times of the invasion of the Vikings Exuperius’ relics were translated from Bayeux, and eventually were deposited at Corbeil; the Saint-Spire cathedral in Corbeil-Essonnes is dedicated to him.
He wrote to Jerome, who advised him to continue his studies, commending him to imitate the virtues of St. Exuperius of Toulouse and to follow the advice of Procule, then Bishop of Marseille.
Saints Severinus, Exuperius, and Felician were martyrs put to death under Emperor Marcus Aurelius at Vienne, Gaul.