Redeunti sane Romam post bellum civile Nigri aliud bellum civile Clodii Albini nuntiatum est, qui rebellavit in Gallia. quare postea occisi sunt filii Nigri cum matre.
Translation :
And then, just as he was returning to Rome after the civil war caused by Niger, he received news of another civil war, caused by Clodius Albinus, who had revolted in Gaul. It was because of this revolt that Niger's children and their mother were later put to death.
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.