# Printed Dio records the 161 CE joint accession of Marcus and Lucius Verus

Date: 1927

## The fact

Loeb/LacusCurtius Dio transmits that at Antoninus Pius’s death Marcus took Verus as co-emperor, a dated political settlement in the received record. The public carrier is the modern Dio, not a 161-01-01 ISO file.

## Context

A dual accession can prevent a succession war. It is also a concentration of two courts. Extractive costs sit on war rows.

[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 joint principate is not a republic. It is a settlement.

A joint principate is not a republic. It is a settlement.

## 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 [social-cohesion](/drivers/social-cohesion). The welfare reading used in this dossier is improving. 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. Later competitions, monuments, translations, UNESCO listings, and museums are not converted into extra lifetime acts. The attached driver is social-cohesion. The welfare reading used in this dossier is improving. 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

- Social Cohesion: https://factrail.ai/drivers/social-cohesion

## 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-joint-accession-dio