Synesius
Martyrological notice
The historical Roman Martyrology commemorates Synesius on 12 December. The Latin notice identifies the record as martyr and pope. The source places the commemoration at Romae.
Historical martyrology witness · Martyrologium Romanum (Latin historical edition)
Romae sancti Synesii Martyris, qui, beati Xysti Papae Secundi tempore ordinatus Lector, et, cum multos convertisset ad Christum, apud Aurelianum Imperatorem accusatus, martyrii coronam gladio percussus accepit.