Eutropius

“ XX MARCUS AURELIUS ANTONINUS BASSIANUS, then, who . was also called CARACALLA, was a man very much of his father's disposition, but somewhat more rough and vindictive. He erected a bath of excellent construction at Rome, which is called the bath of Antoninus, [19] but did nothing else worthy of record. He wanted ability to control his passions; for he married his own step-mother Julia. He died in Osdroene, [20] near Edessa, while he was planning an expedition against the Parthians, in the sixth year and second month of his reign, having scarcely passed the forty-second year of his age. ”

“ He was made emperor at an advanced age, Petronius Secundus, the praefect of the praetorian guards, and Parthenius, one of the assassins of Domitian, giving him their support, and conducted himself with great justice and public spirit. [1] He provided for the good of the state by a divine foresight, in his adoption of Trajan. He died at Rome, after a reign of one year, four months, and eight days, in the seventy-second year of his age, and was enrolled among the gods. ”

“ After his death, which took place in the eleventh year of his reign, he was enrolled among the gods.
XI After him MARCUS ANTONINUS held the government alone, a man whom any one may more easily admire than sufficiently commend. He was, from his earliest years, of a most tranquil disposition; so that even in his infancy he changed countenance neither for joy nor for sorrow. He was devoted to the Stoic philosophy, and was himself a philosopher, not only in his way of life, but in learning. He was the object of so much admiration, while yet a youth, that Hadrian intended to make him his successor ”

“ He died so sudden a death, that he was thought to have been strangled or despatched by poison, after he had reigned twelve years and eight months after his father, and in the midst of such execration from all men, that even after his death he was styled "the enemy of the human race." ”

“ IV Yet he went beyond his glory in war, in ability and judgment as a ruler, conducting himself as an equal towards all, going often to his friends as a visitor, [4] either when they were ill, or when they were celebrating feast days, and entertaining them in his turn at banquets where there was no distinction of rank, and sitting frequently with them in their chariots; doing nothing unjust towards any of the senators, nor being guilty of any dishonesty to fill his treasury ”

“ X These two were connected both by relationship [9] and affinity; for Verus Antoninus had married the daughter of Marcus Antoninus; and Marcus Antoninus was the son-in-law of Antoninus Pius, having married Galeria Faustina the younger, his own cousin. They carried on a war against the Parthians, who then rebelled for the first time since their subjugation by Trajan. Verus Antoninus went out to conduct that war, and, remaining at Antioch and about Armenia, effected many important achievements by the agency of his generals ”