He was chosen as the magister equitum of Gaius Sulpicius Peticus in 358 BC in order to confront a group of Gauls who had entered Latium. The Romans engaged the Gauls at Pedum after a prolonged standoff. Poplicola was then elected as consul in 355 BC alongside the former dictator Peticus. The two took the town of Empulum from Tibur without any major battle being fought. His next consulship was in 353 BC, and he served alongside Peticus once again. With the threat of attack from both the Etruscans and the Volsci, Valerius was called back to Rome in order to nominate Titus Manlius Imperiosus Torquatus as dictator.
- Smith, William (1844). "Publi'cola, Vale'rius". Dictionary of Greek and Roman Biography and Mythology. London: Taylor and Walton. OCLC 2455785.
- Livy, Ab Urbe Condita vii. 12
- Livy, Ab Urbe Condita vii. 17-18
- Livy, Ab Urbe Condita vii. 19