A bishop of Praeneste is first mentioned in 313.

During the whole 8th century and part of the 9th, no bishops are mentioned for Bordeaux among Vatican and local records.

A bishop of Tarquinii is mentioned in 456.

Five other titular bishops of the sixteenth century are mentioned in the Revue bénédictine.

A bishop of Speyer was first mentioned in a document in 346.

Several bishops of Dor are mentioned in Christian church records.

A bishop of Castellaneta, Joannes, is first mentioned with the diocese.

The bishops of Icosium are mentioned as late as the 5th century.

Other bishops are mentioned in other sources.

In 346, a bishop for the town is mentioned for the first time.