In 422 BC Antonius was elected as consular tribune together with Lucius Manlius Capitolinus and Lucius Papirius Mugillanus. The year saw the beginning of the trial against the former consul Gaius Sempronius Atratinus, who had in 423 BC unsuccessfully fought against the Volscians. The trial was led by the plebeian tribunes and the prosecutor Lucius Hortentius. The trial would drag on and not reach a conclusion until 420 BC. The actions of the consular tribunes of this year is not recorded.Chronograph of 354 (Capitolino et Mugilliano)Livy, Ab Urbe Condita, iv. 42.2Valerius Maximus, Factorum ac dictorum memorabilium libri IX, vi, 5.2Broughton, vol i, pp.69
