Explicit disclosure of social rank and Mithraic grade was clearly important for those at the top, a circumstance which compels us to ask both why this was so, and who occupied the lower grades so carefully but anonymously recorded in the Campus Martius inscriptions. The context of the mithraea and the Mithraic dedications offers insight.
I am at a loss to explain the lack of the tria nomina here. Bloch, op. cit. (n.36) did not include “Agrestius” on his chart of viri clarissimi. P. Herz, “Agrestius v(ir) c(larissimus),” ZPE 49 (1982) 221-24 convincingly established a terminus post quem of 364 for Agrestius but offered no thoughts on his name.
—A. B. Griffith (1993) Mithraism in the private and public lives of 4th-c. senators in Rome
Other brothers from Roma
This altar mentioning the god Arimanius was found in 1655 at Porta San Giovanni, on the Esquilino.
D(eo) Arimanio / Agrestius v(ir) c(larissimus) / defensor / magister et / pater patrum / voti c(ompos) d(at).
To the god Arimanius, Agrestius, clarissimus, defensor (civitatis?), magister et Pater patrum, gives [this altar] according to his wish.