Petrus
Martyrological notice
The historical Roman Martyrology commemorates Petrus on 18 January. The Latin notice identifies the record as martyr and virgin and apostle. The source places the commemoration at Cathedra.
Historical martyrology witness · Martyrologium Romanum (Latin historical edition)
Cathedra sancti Petri Apostoli, qua primum Romae sedit. Ibidem passio sanctae Priscae, Virginis et Martyris; quae sub Claudio Imperatore, post multa tormenta, martyrio coronata est.