Biography of Alcimus
Alcimus, steward of T. Claudius Livianus, has dedicated the earliest known sculpture of a Mithras Taurcotonos. Vermaseren and Gordon believe that Tiberius Claudius Livianus was commander of the Praetorian Guard in 101 AD.
Alcimus, a wealthy slave steward of Tiberius Claudius Livianus, a knight close to Trajan who became prefect of the Praetorium in 101, can be dated to the very end of the 1st or, rather, the beginning of the 2nd century.
—Les cultes de Mithra dans l'Empire romain
Other brothers from Roma
This is the earliest known sculpture of a Roman Mithraic tauroctony.
Alcimus T. Cl(audi) Liviani ser(vus) vilic(us) S(oli) M(ithrae) v(otum) s(olvit) d(onum) d(edit)
Alcimus, slave and bailiff of Tiberius Claudius Livianus, gave this as a gift to the sun-god Mithras in fulfilment of a vow.