Martyrius Subdiaconi
Martyrological notice
The historical Roman Martyrology commemorates Martyrius Subdiaconi on 25 October. The source places the commemoration at Constantinopoli.
Historical martyrology witness · Martyrologium Romanum (Latin historical edition)
Constantinopoli passio sanctorum Martyrii Subdiaconi, et Marciani Cantoris, qui ab haereticis, sub Constantio Imperatore, necati sunt.