This marble slab bears an inception be the Pater Proficentius to whom Mithras has suggested to build and devote a temple.
TNMM437 – CIMRM 423
Hic locus est felix, sanctus, piusque benignus,
Quem monuit Mithras mentemque dedit
Proficentio patri sacrorum
Utque sibi spelaeum faceret dedicaretque
Et celeri instansque operi reddit munera gra…