Austadius was a 6th-century bishop of the diocese of Nice. He is recorded briefly in

Gregory of Tours Gregory of Tours (born ; 30 November – 17 November 594 AD) was a Gallo-Roman historian and Bishop of Tours during the Merovingian period and is known as the "father of French history". He was a prelate in the Merovingian kingdom, encom ...

' writings, wherein Gregory records that when Saint

Hospitius Hospitius (in French, Hospice and anciently Sospis; died 21 May 581) was a French recluse who, according to tradition, had been a monk in his native Egypt towards the beginning of the 6th century. He immigrated to Gaul and retired to a dilapidat ...

died, he prophesied his own death several days before and had asked for Austadius to prepare his burial. Austadius did this and interred Hospitius in the wall of the tower where the saint had lived.https://www.catholic.com/encyclopedia/hospitius-saint, The Catholic Encyclopedia, Hospitius, Saint, 1912, retrieved July 19th 2023

References

6th-century bishops in Gaul {{France-RC-bishop-stub