# Theodosius dies at Milan on 17 January 395; Arcadius and Honorius take East and West as a lasting division

Date: 395

## The fact

Britannica records death on 17 January 395 at Mediolanum and the dual succession. DIR independently closes the reign there.

It is one event.

## Context

Leaving two courts is a resilience-harm heading in later political thought: the empire as one body splits. Hereditary child-emperors are the mechanism. Shared ministers (Rufinus, Stilicho) remain.

[Theodosius I](/people/theodosius-i)’s documented role is bounded by other offices and collaborators named in the sources below. Sharing a field with them is not a reason to drop a documented act, and it is not a reason to assign later consequences done in the name after death.

Britannica: sudden death caused a split, sons ruling East and West. Stilicho is the western military guardian in the received file. This is not Constantine’s 337 as a copy, though the related-person influence is named.

Named person as heading of the dated public instrument. Later editors, museums, printers, or offices share publication. Complex where later carriers are the surviving public file.

## Evidence and sources

Britannica — Theodosius I and De Imperatoribus Romanis — Theodosius I independently describe this instrument.

Official or archival record: Britannica — Theodosius I (https://www.britannica.com/biography/Theodosius-I; Encyclopaedia Britannica).

## Significance

The 395 division is a [democratic-resilience](/drivers/democratic-resilience) path of high confidence on the succession as received, medium on counterfactuals.

## What is established and what is not

Established as a sourced public record of this instrument at the date assigned here.

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.

Established here: a sourced, dated public instrument with a named contribution by Theodosius I.

They are not a public rating.

The driver `democratic-resilience` is attached because the mechanism named in Significance follows from this instrument, not because a standing list of welfare headings needed another tick. Theodosius I did not file a later UNESCO form, a later Loeb colophon, or a later museum label as a personal act. A portrait or conventional bust is not this mechanism. Allegation, reconstruction, and established occurrence stay distinct. Do not treat 395 as a modern secession referendum. Do not store the funeral oration as his act. Keep the carrier date of later English distinct from the received historical year stored in the date field. Do not read a later English edition as a recovered autograph of Theodosius I.

## People

- Theodosius I: https://factrail.ai/people/theodosius-i

## Drivers

- Democratic Resilience: https://factrail.ai/drivers/democratic-resilience

## Sources

- https://roman-emperors.sites.luc.edu/theo1.htm
- https://www.britannica.com/biography/Theodosius-I

## Methodology

https://factrail.ai/methodology

Canonical: https://factrail.ai/facts/theo-death-division-395