Roma (185) — the same event in Cassius Dio, Herodian, History of the Empire and Historia Augusta

Cassius Dio: The British legion sent 1,500 spearmen to Italy to accuse Perennis; Commodus handed the praetorian prefect over to them; Cassius Dio…

What each source says

Cassius Dio, Roman History · AD 185 · Roma

The British legion sent 1,500 spearmen to Italy to accuse Perennis; Commodus handed the praetorian prefect over to them

now chose out of their number fifteen hundred javelin men and sent them into Italy.
Location: 73(72).9.2

Cassius Dio, Roman History · AD 185 · Roma

The praetorian prefect Perennis was beaten to death by soldiers, and his wife, children and sister also died

So Perennis was maltreated and struck down by those men, and his wife, his sister, and two sons were also killed.
Location: 73(72).9.4

Herodian, History of the Empire · AD 185 · Rome

1,500 lancers sent by the army of Britain accuse Perennis of treason. Commodus executes him and his sons.

Location: 1.9

Historia Augusta · AD 185

In the British war, for dismissing senators and placing equestrians in command of the army, Perennis is declared a public enemy on the army's report and handed over to the soldiers, who kill him

hic tamen Perennis, qui tantum potuit, subito, quod bello Britannico militibus equestris loci viros praefecerat amotis senatoribus, prodita re per legatos…
Location: Comm. 6.2

Where the sources differ

A and B are two of the sources listed above.

On what pointSource ASource BWhat differs (in Korean)
WhoCassius Dio, Roman HistoryHerodian, History of the Empirea는 병사들이 구타·살해, b는 콤모두스가 처형

Place: Rome

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