Antonius Pius (138-161 AD) from Rome.
"Antoninus permitted all such [Provincial Roman citizens] to give to the children their heritage, choosing rather to show himself benevolent than to retain a law that swelled his riches. This emperor the Romans called Pius, because he showed himself to be a most religious man."
Pausanias - Description of Greece VIII.43.5
Translated by W.H.S Jones and H.A. Omerod 1918