The Tree of Europe · Person

Arthur III of Brittany

«Richemont»

Known as Arthur of Richemont, he was the son of John IV of Brittany and Joan of Navarre. He had an important career as Constable of France before inheriting the duchy in 1457.

1393 – 1458Duke / ConstableMontfort-Brittany · ES

Explore this family · Spanish Atlas Back to people

This complete profile is available in English. Bibliographic titles retain their original language. Links marked ES open the Spanish edition.

Historical profile

Key details

Birth: 24 August 1393 Documented

Death: 26 December 1458 Documented

Role: Duke / Constable

Dynasty: Montfort-Brittany · ES

Territories: Brittany (ES) · France (ES)

Recorded governments and reigns

Duke · Brittany · Duchy Pending review1457–1458Effective rule

Family network

Recorded relationships

Parents

John IV of Brittany · ESPending reviewJoan of Navarre, Duchess of Brittany · ESPending review

Documentation

Sources for this profile

Biographical and contextual references in their original language. Sources and methodology.

Evidence for this profile

5 recorded claims · 3 without a claim-specific source. Context references do not by themselves verify every fact.

Dates (2/2 with a precise source)

BirthDocumented
24 August 1393
The authority record gives the birth as 1393-08-24.
Deutsche Nationalbibliothek · GND · Arthur III, Bretagne, Herzog · Vital data: birth date
Reviewed on 2026-10-17 by El Árbol de Europa ·
DeathDocumented
26 December 1458
The authority record gives the death as 1458-12-26.
Deutsche Nationalbibliothek · GND · Arthur III, Bretagne, Herzog · Vital data: death date
Reviewed on 2026-10-17 by El Árbol de Europa ·

Family and relationships (0/2 with a precise source)

FatherPending review
John IV of Brittany
A precise source has not yet been added.
No individual review recorded ·
MotherPending review
Joan of Navarre, Duchess of Brittany
A precise source has not yet been added.
No individual review recorded ·

Governments (0/1 with a precise source)

GovernmentPending review
Duke · Brittany · 1457–1458
A precise source has not yet been added.
No individual review recorded ·

Biographical and contextual references (3)

Editorial history

2026-10-12 · Claim registry added; existing historical data kept. Specific sourcing remains to be reviewed.
2026-10-08 · Claim registry added; existing historical data kept. Specific sourcing remains to be reviewed.
2026-10-04 · Claim registry added; existing historical data kept. Specific sourcing remains to be reviewed.
2026-10-04 · Claim registry added; existing historical data kept. Specific sourcing remains to be reviewed.
2026-10-03 · Claim registry added; existing historical data kept. Specific sourcing remains to be reviewed.
2026-09-30 · The duchy is limited to Dijon and Autun; each other fief now enters the map only under its dated ruler. John III of Namur and the Nevers/Rethel branch were added. The previous shape combined later counties and unrelated lands as if all belonged to the duchy from 1363.
2026-09-28 · Claim registry added; existing historical data kept. Specific sourcing remains to be reviewed.

Follow this person through history

Story · Spanish original

The Hundred Years’ War

A dynastic dispute that transformed France and England

Start reading

Keep exploring

More paths from Arthur III of Brittany