A member of gens Arria, a family of consular rank, Antoninus was also an office holder, having been twice consul: the first time was in 69 with Aulus Marius Celsus as his colleague,[1] and the second in 97 with Gaius Calpurnius Piso as his colleague.
[3] Antoninus was a friend of and correspondent to the senator and historian Pliny the Younger.
The Historia Augusta describes him as a "righteous person", who pitied Nerva when he became Emperor in 96.
[4] John Grainger notes "he was the senior figure in a potent aristocratic network which centered on Gallia Narbonensis and extended into Spain, whose members included T. Aurelius Fulvus, P. Julius Lupus and M. Annius Verus.
Fadilla married Titus Aurelius Fulvus, ordinary consul in 89; their only child was Titus Aurelius Fulvus Boionius Arrius Antoninus, who, as Antoninus Pius, became emperor (138-161).