Marcus
Martyrological notice
The historical Roman Martyrology commemorates Marcus on 22 October. The Latin notice identifies the record as bishop. The source places the commemoration at Hierosolymis.
Historical martyrology witness · Martyrologium Romanum (Latin historical edition)
Item Hierosolymis beati Marci Episcopi, clarissimi et doctissimi viri, qui primus ex Gentibus Ecclesiam Hierosolymorum suscepit regendam, ac, non multo post, sub Antonino Imperatore, martyrii meruit palmam.