The Mithraeum in the Chapel of the Three Naves was not linked to the cult of Mithras until recently because of a mosaic showing a pig, in the belief that it was an animal unfit for consumption in a temple of Eastern origin.
This marble slab found near the Casa de Diana in Ostia bears two inscription with several names of brothers of a same community
TNMM488 – CIMRM 223
[M. Lollia]no Callinico / [patre Pe]tronius Felix / [Marsus sign]um deo / [donum] ded(it) / . . . atus xinu . . . / fecit.
M. M. Caer[ellius Hiero]/nimus et C[allinic]/us sacerdo[tes et antisti]/es…