et cum illi tutum exsilium promitteret, si ab armis recederet, persistens iterum pugnavit et victus est atque apud Cyzicum circa paludem fugiens sauciatus, et sic ad Severum adductus atque statim mortuus.
Translation :
Even then, Severus promised him safety in exile if he would lay down his arms. Niger, however, persisted and gave battle a second time, but was defeated; and in his flight while near the lake at Cyzicus he was wounded and was thus brought before Severus, and presently he was dead.
Edition :
Historia Augusta, Volume I: Hadrian. Aelius. Antoninus Pius. Marcus Aurelius. L. Verus. Avidius Cassius. Commodus. Pertinax. Didius Julianus. Septimius Severus. Pescennius Niger. Clodius Albinus. Translated by David Magie. Loeb Classical Library 139. Cambridge, MA: Harvard University Press, 1921.