Skip to content
YearMaps
Early Middle Ages825 CE – 921 CEPeak: 47,425 km² (874 CE)

Kingdom of Brittany: Map & History

The Kingdom of Brittany was a short-lived vassal-state of the Frankish Empire that emerged during the Norse invasions.

6.0
825 CEDrag timeline:874 CE921 CE
825 CE
850 CE
875 CE
895 CE
921 CE
Peak Extent: 47,425 km²Vector Attribution: Cliopatria (CC BY 4.0)Wikidata: Q771193 ↗
W

Wikipedia Encyclopedic Compendium

Historiographical synthesis & structured realm registry

Wikipedia: Kingdom of Brittany
Kingdom of Brittany historical cartography
Vassal-state of the Frankish Empire

The Kingdom of Brittany was a short-lived vassal-state of the Frankish Empire that emerged during the Norse invasions. Its history begins in 851 with Erispoe's claim to kingship. In 856, Erispoe was murdered and succeeded by his cousin Salomon.

Common Languages
Breton, Gallo, Latin, French, Norman, Poitevin
Historical Religion
Catholicism
Peak Territory
47,425 km²
Key Dynasts / Leaders
Erispoe (first), Allan II (last)
Preceded By
Cornouaille, Domnonée
Succeeded By
Duchy of Brittany, Viking Brittany#Norse occupationViking Upper Brittany, Duchy of Normandy
Content & infobox metadata adapted from Wikipedia (Kingdom of Brittany)

Modern Countries Once Part of Kingdom of Brittany

At its mapped extent, Kingdom of Brittany covered territory in 1 present-day country. The period shown is when the mapped borders include that country, and the note says how much of it.

States and Provinces

Largest Present-Day Cities in Its Territory

Each opens on the live map inside Kingdom of Brittany's borders of that time.

Derived by testing mapped cities against this polity's dated territorial polygons, so the list is indicative and follows the borders in the source dataset.

Kingdom of Brittany in Depth

History

In 383, Magnus Maximus was proclaimed emperor by his soldiers in Britain. He promptly invaded Gaul and deposed Emperor Gratian. During the invasion, he instructed some of his soldiers to occupy the western part of the Armorican peninsula and expel soldiers loyal to Gratian. The House of Ingelger confirm this event in their origin story.

At the end of the Antiquity period, additional Celtic Britons, fleeing the Anglo-Saxon settlement of Britain (5th-7th centuries), settled in the same region. At some stage, it was renamed Brittany ("little Britain").

As a result of these settlements, Celtic culture was revived in Gallo-Roman Armorica and independent petty kingdoms arose in this region, namely Cornouaille, Domnonée and Broërec.

Sections adapted from Wikipedia: Kingdom of Brittany (CC BY-SA 4.0).

Kingdom of Brittany: Key Facts

Key facts about Kingdom of Brittany
Founded851 CE
Dissolved939 CE

Facts from Wikidata Q771193 (CC0).

Kingdom of Brittany Map Over Time

Dated world maps on which Kingdom of Brittany appears, with the other states of the time.

Kingdom of Brittany Timeline

Key historical inflections from foundation to peak territorial expansion

1 Epochs
Territorial Apex874 CE

Expansion to peak recorded area of 47,425 km² in 874 CE.

Kingdom of Brittany: Frequently Asked Questions

When did the Kingdom of Brittany exist?

The Kingdom of Brittany is dated to 825 CE – 921 CE, in the Early Middle Ages era.

How large was the Kingdom of Brittany at its peak?

At its peak in 874 AD the Kingdom of Brittany covered about 47,425 km².