Athenae (176) — the same event in Cassius Dio and Historia Augusta

Cassius Dio: At Athens Marcus was initiated into the Mysteries, favored the Athenians and established state-paid chairs for teachers of every branch…

What each source says

Cassius Dio, Roman History · AD 176 · Athenae

At Athens Marcus was initiated into the Mysteries, favored the Athenians and established state-paid chairs for teachers of every branch of learning

When Marcus had come to Athens and had been initiated into the Mysteries, he not only bestowed honours upon the Athenians, but also, for the benefit of the…
Location: 72(71).31.3

Historia Augusta · AD 176 · Athens

After settling the East he comes to Athens and is initiated into the Eleusinian Mysteries

Location: Marc. 27.1

Place: Athenai

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