# Gregorian and Hermogenian codes in the tetrarchic years make constitutions copyable as a law file

Date: 295

## The fact

In the 290s private codes of imperial constitutions (Gregorianus, Hermogenianus) made tetrarchic law more copyable.

It is one event.

## Context

Copyable constitutions can still be cruel (Price Edict). This stores access to a law file versus purely oral command.

[Diocletian](/people/diocletian)’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.

Codex Gregorianus / Hermogenianus as private collections of imperial constitutions around the 290s. Analogical: more copyable law versus oral whim. Medium.
Named person as heading of the dated public instrument. Later editors, museums, printers, or offices share publication. Complex where later carriers date the row.

## Evidence and sources

Grenoble Roman-law pages and Cambridge independently date these codes to the tetrarchic cluster.

Official or archival record: Roman law texts including Price Edict fragments — Grenoble (https://droitromain.univ-grenoble-alpes.fr/; Université Grenoble Alpes / Droit romain).

## Significance

A code is not an independent bench. Keep persecution edicts as law too.

## What is established and what is not

Established: Gregorian/Hermogenian collections in this era. Not established: that judges became independent in a modern sense.

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 Diocletian.

What would change the picture: a contradictory original with a different date, signatory, or non-occurrence; a demonstrated forgery; or a measured series that can be argued, with lag and alternatives, as a consequence of this instrument rather than of other causes.

They are not a public rating.

## People

- Diocletian: https://factrail.ai/people/diocletian

## Drivers

- Judicial independence erosion (court capture): https://factrail.ai/drivers/justice-judicial-independence-erosion

## Sources

- https://droitromain.univ-grenoble-alpes.fr/
- https://www.cambridge.org/core/books/cambridge-ancient-history/

## Methodology

https://factrail.ai/methodology

Canonical: https://factrail.ai/facts/di-legal-codification-beginnings