Codex Inscriptionum Latinarum 14.3579 "Epigraphik-Datenbank Clauss/Slaby". Archived from the original on 29 April 2012. Retrieved 15 November 2011.; Birley, Marcus Aurelius, p. 29; McLynn, Marcus Aurelius: Warrior, Philosopher, Emperor, pp. 14, 575 n. 53, citing Ronald Syme, Roman Papers 1.244.
HA Verus ix. 2; Corpus Inscriptionum Latinarum 3.199 "Epigraphik-Datenbank Clauss/Slaby". Archived from the original on 29 April 2012. Retrieved 15 November 2011.; Birley, Marcus Aurelius, pp. 130–131.
'Thinkers At War – Marcus Aurelius'. Military History Monthly, published 2014. (This is the conclusion of Iain King's biography of Marcus Aurelius.) 'Pius, one of longest-serving emperors, became infirm in his last years, so Marcus Aurelius gradually assumed the imperial duties. By the time he succeeded in 161, he was already well-practised in public administration.'
The epitomator of Cassius Dio (72.22) gives the story that Faustina the Elder promised to marry Avidius Cassius. This is also echoed in HA"Marcus Aurelius" 24.
Cassius Dio, Book 69,21.1. "Marcus Annius Verus [...] This Marcus Annius, earlier named Catilius, was a grandson of Annius Verus [...] He preferred Verus on account of his kinship and his age and because he was already giving indication of exceptional strength of character. This led Hadrian to apply to the young man the name Verissimus, thus playing upon the meaning of the Latin word."
Historia Augusta, Marcus Antoninus I.9–10. "At the beginning of his life Marcus Antoninus was named Catilius Severus after his mother's grand-father. After the death of his real father, however, Hadrian called him Annius Verissimus, and, after he assumed the toga virilis, Annius Verus."
Codex Inscriptionum Latinarum 14.3579 "Epigraphik-Datenbank Clauss/Slaby". Archived from the original on 29 April 2012. Retrieved 15 November 2011.; Birley, Marcus Aurelius, p. 29; McLynn, Marcus Aurelius: Warrior, Philosopher, Emperor, pp. 14, 575 n. 53, citing Ronald Syme, Roman Papers 1.244.
Birley, Marcus Aurelius, pp. 57, 272 n.10, citing Codex Inscriptionum Latinarum6.32, 6.379, cf. Inscriptiones Latinae Selectae360.
HA Verus ix. 2; Corpus Inscriptionum Latinarum 3.199 "Epigraphik-Datenbank Clauss/Slaby". Archived from the original on 29 April 2012. Retrieved 15 November 2011.; Birley, Marcus Aurelius, pp. 130–131.
Inscriptiones Latinae Selectae1098; Birley, Marcus Aurelius, p. 130.