Vinicius was a Novus homo whose family originated at Cales in Campania,[1] and who were members of the Roman equestrian order.
[3] Vinicius was a supporter of Julius Caesar at a time of confrontation with the Senate and Pompey.
The coins he minted featured Concordia and allusions to Pompey's four triumphs, perhaps to advocate a reconciliation between Caesar and Pompey.
[4] Vinicius was elected tribune of the plebs for 51, during which time he vetoed an anti-Caesarean resolution of the Senate together with three other tribunes.
[5] His support for Caesar and then Augustus saw him appointed as suffect consul in 33 BC, replacing Marcus Acilius Glabrio, and serving from October through to the end of December.