Roma (211) — the same event in Cassius Dio, Herodian, History of the Empire and Historia Augusta

Cassius Dio: Antoninus, pretending to reconcile his brother Geta, called him to their mother's rooms and had centurions kill Geta in her arms (aged…

What each source says

Cassius Dio, Roman History · AD 211 · Roma

Antoninus, pretending to reconcile his brother Geta, called him to their mother's rooms and had centurions kill Geta in her arms (aged 22 years 9 months)

Thus Geta was persuaded, and went in with him;
Location: 78(77).2.2

Herodian, History of the Empire · AD 211 · Rome

After Geta's murder, Caracalla tells the praetorians in excuse that "my brother attacked me with armed men."

Location: 4.4

Historia Augusta · AD 211 · Rome

After his father's death Caracalla complains at the praetorian camp that his brother is plotting, then kills his brother in the palace and has the body burned at once

Post patris mortem in Castra Praetoria pergens apud milites conquestus est circumveniri se fratris insidiis, atque ita fratrem in Palatio fecit occidi. eius…
Location: Carac. 2.4

Where the sources differ

A and B are two of the sources listed above.

On what pointSource ASource BWhat differs (in Korean)
OutcomeHerodian, History of the EmpireHistoria Augustaa는 게타가 무장한 자들과 덮쳤다고 변명, b는 동생이 음모를 꾸민다고 호소했다고 적음

Place: Rome

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