kingdom · France and the Low Countries
Kingdom of Brittany
Origins
Louis the Pious appointed the Breton noble Nominoe as his representative in Brittany in 831. After Louis's death Nominoe broke with Charles the Bald, defeating him at Ballon in 845. His son Erispoe won again at Jengland in 851, and the Treaty of Angers recognised him as king with Rennes, Nantes and the Pays de Retz.
Rule and society
The kingdom united Domnonée, Cornouaille and Broërec with the Frankish marches. Salomon, who killed Erispoe and took the throne in 857, gained the Cotentin and Avranchin in 867. The kings ruled through local machtierns and monasteries such as Redon, and set up a Breton church province at Dol.
Decline and legacy
After internal conflict Alan the Great defeated the Vikings at Questembert around 888, but after his death in 907 Vikings overran Brittany. Alan Barbetorte returned from England in 936 and expelled them by 939, ruling as duke and founding the Duchy of Brittany.
Lineage
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Cite this page
- APA
- The Epoch Institute. (2026). Kingdom of Brittany. In The Epoch Institute States Register. https://the-epoch-institute.org/state/kingdom-of-brittany
- MLA
- “Kingdom of Brittany.” The Epoch Institute States Register, The Epoch Institute, 2026, https://the-epoch-institute.org/state/kingdom-of-brittany. Accessed .
- Chicago
- The Epoch Institute. “Kingdom of Brittany.” The Epoch Institute States Register. 2026. https://the-epoch-institute.org/state/kingdom-of-brittany.
- Harvard
- The Epoch Institute (2026) ‘Kingdom of Brittany’, The Epoch Institute States Register. Available at: https://the-epoch-institute.org/state/kingdom-of-brittany (Accessed: ).
Last reviewed October 2026Random state ↻