# Printed Dio and standard accounts record the Parthian war of Verus under Marcus’s co-rule as loot and plague return

Date: 1927

## The fact

Dio-based standard accounts record Lucius Verus’s Parthian campaign, triumph, and the return that later writers link to plague, all under the joint principate. The dated carrier is the modern Dio. Marcus is co-emperor, not the sole field commander.

## Context

Eastern loot plus epidemic return is a governance-cost path. Shared rule is why contribution is complex.

[Marcus Aurelius](/people/marcus-aurelius) is not the sole author of every later object, law, or museum label that uses the name. Shared work with courts, excavators, printers, spouses, officials, and later states does not erase a documented role, and it does not make an ancient person the signer of a twentieth-century statute.

## Evidence and sources

Official museum/encyclopedia/agency pages and an independent publisher independently describe this instrument.

Official or archival record: Cassius Dio, Roman History — public English (https://penelope.uchicago.edu/Thayer/E/Roman/Texts/Cassius_Dio/home.html; University of Chicago / LacusCurtius).

## Significance

A triumph is not a health policy.

A triumph is not a health policy.

## What is established and what is not

Established as a dated public record of this instrument.

What would change the picture: a contradictory original with a different date or name, or a measured series that can be argued, with lag and alternatives, as a consequence of this instrument rather than of later institutions.

The date is the date of this instrument, not a licence to back-date every later harm or benefit.
Later competitions, monuments, translations, UNESCO listings, and museums are not converted into extra lifetime acts. The attached driver is [institutional-corruption](/drivers/institutional-corruption). The welfare reading used in this dossier is worsening. That reading is an impact-path choice, not a property stored on the Fact itself. Confidence is stated on the impact path. A later English edition is not a recovered autograph. If a number is not in the two records named above, it is not supplied here.

## People

- Marcus Aurelius: https://factrail.ai/people/marcus-aurelius

## Drivers

- Institutional Corruption: https://factrail.ai/drivers/institutional-corruption

## Sources

- https://www.britannica.com/biography/Marcus-Aurelius-emperor-of-Rome
- https://penelope.uchicago.edu/Thayer/E/Roman/Texts/Cassius_Dio/home.html

## Methodology

https://factrail.ai/methodology

Canonical: https://factrail.ai/facts/ma-verus-parthian-loot