According to the inscription on the relief of Mithras slaying the bull found in the Campidoglio in the 15th century, Gaius Aufidius Ianuarius was the donor of the monument that was to be the main image of the mithraeum called 'lo perso' in the centre of Rome.
Other brothers from Roma
This relief of Mithras slaying the bull was erected in Piazza del Campidoglio, moved to Villa Borghese and is now in the Louvre Museum.
Nama Sebesio. / Deo Soli invict[o] Mitrhe (sic!) / C(aii) Aufidii Ianuarius [et…] Nam/a/ ne CS
Tribute to Sebesisus.
To the invincible Sol god Mithras. Caius Aufidius Ianuarius [and Caius Aufidius ---].