Iacchus (noun M) : Ἴακχος. * A poetic and mystical appellation of Bacchus, Verg. E. 7, 61; id. G. 1, 166; Cic. Leg. 2, 14, 34; Cat. 64, 251; Ov. M. 4, 15. * Poet. transf., like Bacchus, wine: (Silenum) Inflatum hesterno venas, ut semper, Iaccho,Verg. E. 6, 15: multo madefactus, Col. poët. 10, 309.
Charlton T. Lewis, Charles Short, A Latin Dictionary
PIR
Male Personal name Confirmed occurences in the Roman Empire:
Aelius Iacchus (Masc, eques), ref: PIR A 0194 | PIR ID785