Scriptores Historiae Augustae
fuit denique hactenus statua in pede montis Romulei, hoc est ante sacram viam, inter templum Faustinae ac Vestam ad arcum Fabianum, quae haberet inscriptum 'Gallieno iuniori' 'Salonino' additum. ex quo eius nomen intellegi potest.
Finally there was up to this point a statue at the foot of the Palatine,that is in front of the Via Sacra, between Vesta and the temple of Faustina, by the arch of Fabius, which they say was dedicated 'To Gallienus the Younger' with 'Saloninus' added. This is how we know his name.
Reprinted by permission of the publishers and the Trustees of the Loeb Classical Library from Scriptores Historiae Augustae: Volume III. The Two Valerians. The Two Gallieni. The Thirty Pretenders. The Deified Claudius. The Deified Aurelian. Tacitus. Probus. Firmus, Saturninus, Proculus and Bonosus. Carus, Carinus and Numerian, Loeb Classical Library Vol. 263, translated by D. Magie, Cambridge, Mass.: Harvard University Press, © 1932, by the President and Fellows of Harvard College. The Loeb Classical Library ® is a registered trademark of the President and Fellows of Harvard College.