Joannes
Martyrological notice
The historical Roman Martyrology commemorates Joannes on 11 July. The Latin notice identifies the record as bishop. The source places the commemoration at Bergomi.
Historical martyrology witness · Martyrologium Romanum (Latin historical edition)
Bergomi sancti Joannis Episcopi, qui, ob tuendam catholicam fidem, ab Arianis occisus est.